1690302 - [Bug] Background images are not fully rendered when the toolbar menu hides.

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect)

Description

[Petru-Mugurel Lingurar [:petru]]

From github: https://github.com/mozilla-mobile/fenix/issues/16298.

Steps to reproduce

Navigate to https://www.sleeping.pt/wp/2020/08/22/test-parallax-cover/

Watch the following video that shows the problem.
https://www.sleeping.pt/wp/wp-content/uploads/2020/10/2020_10_30_21_58_13-2.webm

Expected behavior

Whenever the toolbar disappears, redraw the background image.

Actual behavior

The background image is not redrawn.

Device information

• Android device: Galaxy A20e
• Fenix version: 82.1.1

Change performed by the Move to Bugzilla add-on.

Comment 1

[Emily Toop (:fluffyemily)]

:hiro can you investigate?

Comment 2

[Hiroyuki Ikezoe (:hiro)]

It seems Chrome does "layout" (reflow in our words) when the toolbar is completely hidden? (IIRC I commented somewhere in b.m.o I was suspecting Chrome does re-layout when the toolbar is hidden, whereas we just change the return value of window.innerHeight).

Anyway, this needs investigations in Chrome what they do exactly.

Also note that, fwiw, I can't reproduce the issue on https://www.sleeping.pt/wp/2020/08/22/test-parallax-cover/.

Comment 3

[Chris Peterson [:cpeterson]]

Closing this bug as incomplete because the test pages in comment 0 and comment 2 are now 404, so we have no way to test. Fortunately, the test case in similar bug 1739323 is still available and I can reproduce that bug in Fenix 100.