1917733 - Incorrect hit testing with fixed-to-bottom page elements when the navigation toolbar is enabled

Status: RESOLVED FIXED

(Fenix :: Toolbar, defect, P1)

Description

[Markus Stange [:mstange]]

Attachment: screen recording

Steps to reproduce:

1. In Firefox for Android, with the new navigation toolbar enabled, go to https://garmin.opentopomap.org/
2. Scroll down so that the dynamic toolbars disappear.
3. Place your finger just above the map that's floating at the bottom, and drag down to scroll up.

Expected results:
The page should scroll up. The map should not move.

Actual results:
The finger is now moving the map, even though the touch start wasn't placed on the map.

Comment 1

[Markus Stange [:mstange]]

Attachment: testcase with bottom panel

Comment 2

[Markus Stange [:mstange]]

Attachment: alternative screen recording

Alternative steps to reproduce:

1. Navigate to attachment 9423714 [details].
2. Scroll down so that the dynamic toolbars are hidden.
3. Tap on a link that's close to the bottom panel. You can't - Gecko thinks the link is behind the panel.
4. Long-press somewhere outside the bottom panel. This sometimes selects text inside the bottom panel, with the selection handles being completely removed from the selection.

Comment 3

[Hiroyuki Ikezoe (:hiro)]

When I try to reproduce this bug on a local debug Fenix, I do see "Assertion failure: -mDynamicToolbarMaxHeight <= aOffset && aOffset <= 0"(bug 1914524). CCing :mavduevskiy.

Comment 4

[Chris Peterson [:cpeterson]]

Mike thinks the fix for bug 1914524 (which should be fixed by bug 1913006) will fix this bug.

Comment 5

[Hiroyuki Ikezoe (:hiro)]

I did confirm it works on the latest nightly.