1738267 - Images no longer display until tab is switched

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect)

Description

[Gian-Carlo Pascutto [:gcp]]

Nightly, Ubuntu 20.04 on x86_64, NVIDIA proprietary driver 470.74 on GTX 1060

STR:

1. Open https://www.gannett-cdn.com/-mm-/151f1cfe9ef81ea55cea18ee9cf37e1682caa0ae/c=0-88-1328-1859/local/-/media/2015/10/21/USATODAY/USATODAY/635810445406677386-Supergirl-Melissa-Benoist.jpg
2. Observe black screen
3. Switch away from Firefox or to another tab
4. Observe image appear

Bisected to https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=46e947d2b251e7cb31130b2148e06dd01d08a3df&tochange=c4f073f7e3a347402602313204b98c308b354df3

Comment 1

[Andrew Osmond [:aosmond] (he/him)]

I have been unable to reproduce via this STR, but I can reproduce bug 1738181 which seems very similar so I suspect they are the same.

Comment 2

[Fanolian]

(In reply to Gian-Carlo Pascutto [:gcp] from comment #0)

STR:

1. Open https://www.gannett-cdn.com/-mm-/151f1cfe9ef81ea55cea18ee9cf37e1682caa0ae/c=0-88-1328-1859/local/-/media/2015/10/21/USATODAY/USATODAY/635810445406677386-Supergirl-Melissa-Benoist.jpg

It is reproducible for me only if the image is opened in the current tab.

---

Here is another image that is shown incorrectly after bug 1711061, probably the same issue.

Steps to reproduce

1. No extensions needed (unlike bug 1738181 that I reported)
2. Open this image in a new tab.
3. Left click in the image so it zooms in to actual size.

Actual result

The actual size image is blurry.
If I reload the tab it shows the same blank screen as described in comment 0. The magnifying glass is still shown when the cursor is on the image's supposed location.

Workaround

1. Zoom out and zoom in again will show the correct image.
2. Scroll up and down. Or
3. Move cursor to scroll bar. I tried moving cursor to address bar but it doesn't work.

Comment 3

[Fanolian]

Attachment: long image for bug 1738267.jpg

The sample image as mentioned in comment 2.

Comment 4

[Andrew Osmond [:aosmond] (he/him)]

Thanks, same tab, multiple times, it eventually happens.

Comment 5

[Pascal Chevrel:pascalc (PTO until April 26)]

Fixed by backout of bug 1711061