1260722 - Windows are sometimes restored in a wrong position outside of the screen

Status: RESOLVED WORKSFORME

(Core :: Widget: Gtk, defect)

Description

[Marco Castelluccio [:marco]]

Sometimes, a window gets restored in a wrong position outside of the screen, which makes it impossible to use it again.

I'm attaching a video of the situation after this has happened (I can't access the restored window anymore).

This might be somehow related to bug 1251217.

Comment 1

[Marco Castelluccio [:marco]]

I've managed to "get the window back" by running Firefox Aurora with the same profile.

Comment 2

[Marco Castelluccio [:marco]]

Attachment: Screencast 2016-03-30 15:29:45.mp4

Comment 3

[Karl Tomlinson (:karlt)]

I guess this happening in Nightly but getting fixed with Aurora indicates this is a regression.

Is this session restore?  bug 1259707?
Or restore from maximised?

Comment 4

[Marco Castelluccio [:marco]]

Restore from maximised.

Comment 5

[Liz Henry (:lizzard) (relman/hg->git project)]

Karl, can you take this on, or help find an owner for it, since it's a fairly recent regression? Thanks!

Comment 6

[Karl Tomlinson (:karlt)]

I'm guessing this is related to high dpi coordinate conversion.
I don't know whether or not bug 1287734 would have fixed this, but Jonathan is the expect here.

Comment 7

[Karl Tomlinson (:karlt)]

"expert", I mean, sorry.

Comment 8

[Jonathan Kew [:jfkthame]]

I can't seem to reproduce this with a current Nightly (running on a high-dpi system). I suspect it may have been resolved as part of one of the various dpi-related bugs we've fixed over the past few months.

But it's also possible that I just haven't been testing exactly the right configuration to trigger the problem. Marco, if you still see this, could you please give exact STR, with the details of your display setup, resolution, etc.?

Comment 9

[Gerry Chang [:gchang]]

Hi Florin,
Can we get QE's help to see if we can still reproduce this in nightly or STR?

Comment 10

[Andrei Vaida [:avaida]]

(In reply to Gerry Chang [:gchang] from comment #9)
> Hi Florin,
> Can we get QE's help to see if we can still reproduce this in nightly or STR?

Added to our team's todo list. We'll follow up as soon as possible.

Comment 11

[Paul Silaghi, QA [:pauly]]

I couldn't reproduce the issue on Nightly 48.0a1 (2016-03-30) and 51.0a1 (2016-08-24) on Ubuntu 14.04 x64, Ubuntu 16.04 x86.

Comment 12

[Marco Castelluccio [:marco]]

I couldn't reproduce it reliably, it was quite random.
I haven't seen it in a long time though, so I'll close it as WORKSFORME.