1425682 - some div's aren't shown after scrolling, hovering over them with my cursor displays them again, usually

Status: RESOLVED WORKSFORME

(Core :: Graphics: Layers, defect, P5)

Description

[jaap.aarts1]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20171114100042

Steps to reproduce:

open a website that has this issue(EG: Spotify web player, sometimes the world of tanks premium store)


Actual results:

the div, in both mentioned cases things you can click on, the div is, usually, displayed correctly.
after scrolling some div's are not displayed, but still calculated in the box model.
sometimes only the top half of the div is displayed, on the bottom half of the div.
during scrolling it flickers, this leads me to believe it's something with the renderer not rendering the div's because of memory(?). wrong offsets or something like that


Expected results:

the div should be calculated in the box model, which is working, and it should be displayed during and after scrolling.

Comment 1

[Matt Woodrow (:mattwoodrow)]

Would you be able to bisect when this started happening?

http://mozilla.github.io/mozregression/

Thanks!

Comment 2

[jaap.aarts1]

I don't know why, but right now I am unable to reproduce the bug.
when I see it again I will test when it started happening.
I know it started a couple months ago, I thought it was a bug in the WoT premium store, when I saw it in Spotify yesterday I reported it here.
yesterday I was able to reproduce it in nightly, developer, and stable builds consistently, after editing the dom/html, reloading, and restarts, now none of them have this issue.
I will update this as soon as this happens again with the earliest build I can find using mozregression.

IDK  if this might help, but im using arch linux, nightly from AUR and stable form official repo. and all the divs where clickable items in a grid layout(not css grid acording to firefox)

Comment 3

[Daniel Bodea [:danibodea]]

Can you reproduce this issue now? Please test it with the latest versions of Firefox Release, Firefox Beta and Nightly.

Thank you for your contribution!

Comment 4

[jaap.aarts1]

I cannot reproduce this issue at the moment.

Comment 5

[Daniel Bodea [:danibodea]]

Considering I cannot reproduce the issue either and based on the comment above, I will mark this bug as RESOLVED WORKSFORME.
If it reoccurs for you, please REOPEN it and add the exact steps to reproduce.

Thank you for your contribution!