Bugzilla

Aha, I figured out why it's important to have the infobar or devtools present on the window - for the bug to repro, it seems that I need to constrain the height of my viewport enough that the popup gets a scrollbar (overlay scrollbar in my case), so that e.g. a divider-line shows up below "In a meeting" at the bottom.

Here's a screencast of me triggering the bug by very-slowly shrinking the height of my window. The bug becomes visible at t=12s (right edge of "What's your status" textbox disappears). This is right when the popup gets small enough to show a dividing line below "In a meeting" and to start showing an overlay scrollbar when hovered.

Aha, I figured out why it's important to have the infobar or devtools present on the window - for the bug to repro, it seems that I need to constrain the height of my viewport enough that the popup gets a scrollbar (overlay scrollbar in my case), so that e.g. a divider-line shows up below "In a meeting" at the bottom.

Here's a screencast of me triggering the bug by very-slowly shrinking the height of my window, which gets at the same situation without relying on those bits of UI to steal height.

In this screencast, the bug becomes visible at t=12s (right edge of "What's your status" textbox disappears). This is right when the popup gets small enough to show a dividing line below "In a meeting" and to start showing an overlay scrollbar when hovered.

Aha, I figured out why it's important to have the infobar or devtools present on the window - for the bug to repro, it seems that I need to constrain the height of my viewport enough that the popup gets a scrollbar (overlay scrollbar in my case), so that e.g. a divider-line shows up below "In a meeting" at the bottom.

Here's a screencast of me triggering the bug by very-slowly shrinking the height of my window, which gets at the same situation without relying on those bits of UI to steal height.

In this screencast, the bug becomes visible at t=12s (the right edge of the "What's your status" textbox disappears). This is right when the popup gets small enough to show a dividing line below "In a meeting" and to start showing an overlay scrollbar when hovered.