(Looks like I can disable the kinetic-scroll "fling" behavior by setting `apz.gtk.kinetic_scroll.enabled` to `false`; that seems to be a workaround for the issue discussed in comment 8.)
Bug 1748921 Comment 9 Edit History
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(Looks like I can disable the kinetic-scroll "fling" behavior by setting `apz.gtk.kinetic_scroll.enabled` to `false`; that seems to be a workaround for the issue discussed in comment 8. That pref-controlled behavior is [here](https://searchfox.org/mozilla-central/rev/2e0ceee0158293a37466aaf9495dbeffef744b7c/widget/gtk/nsWindow.cpp#4597) in the `GDK_SCROLL_SMOOTH` case, which is a codepath that I wasn't hitting by default, per comment 5, until we turned on Wayland.)