Bugzilla

I understand that this is an ugly bug that we'd want fixed asap.
It's also marked as depending on bug 1943086, and I'm not sure whether that will be merged in time for it to also be uplifted.
However, as discussed above, some visual glitches in webpage rendering could appear right after exiting fullscreen videos to portrait mode with the navigation bar feature enabled. These should however be immediately resolved by subsequent APZ updates that Fenix requests after exiting fullscreen and settling it's UI.

I understand that this is an ugly bug that we'd want fixed asap.
It's also marked as depending on bug 1943086, and I'm not sure whether that will be merged in time for it to also be uplifted.
However, as discussed above, some visual glitches in webpage rendering could appear right after exiting fullscreen videos to portrait mode with the navigation bar feature enabled. These should however be immediately resolved by subsequent APZ updates that Fenix requests after exiting fullscreen and settling it's UI.

Based on these values web content might not be properly anchored to the bottom <-- these are the talked about glitches.
But sending wrong values then immediately after the right ones is not a new issue, it's been there from when we added the navbar.
And it doesn't result in a bug for users / in production because after finishing exiting fullscreen and settling the UI Fenix updates again APZ with the "right" values.
So yes, sending wrong probably result in glitches - miss aligned content.
But realistically this does not seem to happen - shown in the video from Youtube where it's bottom bar is correctly aligned to Fenix's bottom toolbar.