Closed Bug 1462173 Opened 3 years ago Closed 2 years ago
Blank address bar
From https://www.reddit.com/r/firefox/comments/8jkm99/webrender_newsletter_19/dz0nxca/ "when typing an address into the address bar, the menu that drops down with suggestions of urls from my browsing history sometimes becomes blank. The menu can still be used, i.e pressing down and then enter will lead to the first suggested result, but the menu is a blank canvas. " STR: "I think I've found it - It happens when I connect multiple monitors. The setup, if it matters, is a 1920x1080 monitor @ 144hz, and a 3840x2160 Sony TV @ 60hz. Using both, still at their native resolution introduces this issue. Switching back to the 1080p monitor fixes the issue. It doesn't happen immediately. It seems to occur after some time. It seems to coincide with dragging a tab from the 1080p monitor to the TV, i.e dragging it off the main browser as a new window."
Win7 SP1, Nvidia GTX 1060 (Driver 388.73), 2560x1440 (Dell U2515H)
Same Awesomebar popup bug with latest driver 397.64. > Workarounds > NO_CONSTANT_BUFFER_OFFSETTING Unsupported by driver
Attachment #8976378 - Attachment is obsolete: true
Is this a regression?
It looked like another bug morphed into this one. Before this, the menu was often stretched to a greater height. This bug isn't always easy to reproduce.
Batch updating status flags based on WR schedule - please adjust if needed.
This might be the same issue as bug 1455167. Random guess: We seem to be using WebRender for these popup windows. Maybe we're trying to paint at a 0x0 size at some point, and then we get into a broken state such that no future paints will work.
I can't repro this, at least with the monitors and the Windows laptop I have around. Jan Andre, can you still repro this?
Yes, still reproducible on Win7. Still not seen on Win10. (Go through all keys if needed: Press a key, then backspace, then try the next one or the same again, etc.)
I'll try to get running some win7 stuff.
I think I can repro this with the window that Linux spawns to run reftests consistently. I'll try to debug that with rr.
If this doesn't happen on Win10 we don't need to block on it.
Assignee: emilio → nobody
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