1448432 - Portion of screens not redrawn when moving window moves back into focus

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect)

Description

[Jean-Yves Avenard [:jya]]

Attachment: Screen Shot 2018-03-23 at 6.36.54 pm.png

Noticed this with the latest nightly (61.0a1 (2018-03-23) (64-bit))

seen on treeherder or irccloud

Some sections of the screen aren't being redrawn as they should. Pressing refresh fix it, but if you move the window out of focus and back in focus, you can see the effect

Attach are two screen captures: one after refresh, and one after moving the window out of focus and back and scrolling a bit.

Comment 1

[Jean-Yves Avenard [:jya]]

Attachment: Screen Shot 2018-03-23 at 7.44.09 pm.png

Comment 2

[Xidorn Quan [:xidorn] UTC+11]

Sounds like an apz issue.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

Is this consistently reproducible for you? If so, can you get a regression range?

Comment 4

[Jean-Yves Avenard [:jya]]

(In reply to Kartikaya Gupta (email:[e-mail]) from comment #3)
> Is this consistently reproducible for you? If so, can you get a regression
> range?

no, it's not consistent.

It does appear to be related to scrolling.. Like it happened again this time, just looking at this bug, I went to do a screen capture and suddenly it refreshed.

I had never seen this happening until 2 days ago.

Comment 5

[Kartikaya Gupta (email:[e-mail])]

Are you on Linux/Windows? It wouldn't surprise me if this were fallout from bug 1447719 somehow, the timing seems to fit when you reported this bug. It might be worth flipping browser.startup.blankWindow to false to see if it still happens.

That being said, I don't have a theory as to why this happens. If it does turn out to be a regression from that bug, maybe it'll get fixed along the with the other regressions from that bug. If not I can investigate.

Comment 6

[Kartikaya Gupta (email:[e-mail])]

Actually this seems like a tab warming regression, same as bug 1447193.

Comment 7

[Jean-Yves Avenard [:jya]]

While I did see it in Linux a few times, I'm mostly seeing this on mac.

Comment 8

[Kartikaya Gupta (email:[e-mail])]

This should be fixed with bug 1447193. Please reopen or comment if you still see this issue in the latest Nightly.