Ah, okay, next one chunk may be important. Within the new behavior: ``` I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents NotifyMouseOut: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseLeave event to div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193d61a0670) and its ancestors I/MouseBoundaryEvents Dispatched "out" and/or "leave" events I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193dc5460d0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193dc5460d0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 193d43e1800, and now in 193d43e1800) ``` Within the legacy behavior: ``` I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13ba9af04c0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13ba9af04c0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 13ba7ad9800, and now in 13ba7ad9800) I/MouseBoundaryEvents The last "over" event target (13ba9af04c0) is removed I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13bb0334dc0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13bb0334dc0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 13ba7ad9800, and now in 13ba7ad9800) ``` So, it seems that the `mouseleave` on `<div class="nav-menu">` causes the issue.
Bug 1943411 Comment 8 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Ah, okay, next one chunk may be important. Within the new behavior: ``` I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents NotifyMouseOut: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseLeave event to div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193d61a0670) and its ancestors I/MouseBoundaryEvents Dispatched "out" and/or "leave" events I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193dc5460d0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (193dc5460d0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 193d43e1800, and now in 193d43e1800) ``` Within the legacy behavior: ``` I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13ba9af04c0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13ba9af04c0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 13ba7ad9800, and now in 13ba7ad9800) I/MouseBoundaryEvents The last "over" event target (13ba9af04c0) is removed I/MouseBoundaryEvents NotifyMouseOver: the source event is eMouseMove (IsReal()=false) I/MouseBoundaryEvents Dispatching eMouseOver event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13bb0334dc0) I/MouseBoundaryEvents Dispatching eMouseEnter event to div[class="nav-menuCol"].div[class="nav-menu nav-menu_3003279 is-visible"].body[class="l-fullHeight pg-home"].html[class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent video audio localstorage sessionstorage webworkers no-applicationcache svg inlinesvg smil svgclippaths wf-montserrat-n4-active wf-active"].#document (13bb0334dc0) and its ancestors I/MouseBoundaryEvents Dispatched "over" and "enter" events (the original "over" event target was in the document 13ba7ad9800, and now in 13ba7ad9800) ``` So, it seems that the `mouseleave` on `<div class="nav-menu">` causes the issue.