This bug is back, but I can't find the original. Running the 7 betas here. It's very often on restart that a two or three of the five windows that I have open will end up offscreen. I have to go into my sessionstore.js file and edit it by hand to change the screenX and screenY values from -32000 to 0 so that I can see them again.
cc'ing Neil and Paul for input on how window positions could be getting scrambled in the restart-and-restore cycle.
I am also having this bug on the release version 6.0.2, so this is not only an issue of the 7 Branch. As I cannot remember any occurrence of this bug before 6.0.2, I assume that the regression happened between 6.0.1 and 6.0.2.
I can pretty much guarantee it wasn't caused by 6.0.2.
Ok, that was just an assumption. Could also be earlier. Seems to be a problem with minimized windows. Original bug could be bug 520178 or, even earlier, bug 502713.
Oh, yeah, I tend to leave windows maximized or minimized and shut down when doing that often.
I tried minimizing and closing several windows via taskbar and then restarting the browser but I can't reproduce. Does anyone have steps to consistently reproduce? I do notice that only 3 of my 5 windows get restored though. Results are the same for me on Aurora and Nightly. Haven't tried earlier versions.
Also using Windows 7 x64
I can confirm Windows XP (x86) is affected, having seen this with Aurora 8 and 9. Most recently I had a window's properties set to: "width": 160, "height": 34, "screenX": -32000, "screenY": -32000, Given the screen placement, that 160 pixels is the width of a taskbar entry/group if there is no "crowding" (at least on this system, I measured), and 34 pixels is the minimum height an Aurora window can be, looks like minimization is involved. I'll see if I can get STR.
This may be triggered by hibernating Windows with a browser window maximized. Now that I have something to test I'll try to confirm exact STR, hopefully this weekend.
That sounds reasonable. I often hibernate my PC, but until now I did not think of the possibility that this could have something to do with the messed-up windows.
I've found a way to reproduce this bug. It has nothing to do with hibernating Windows. Tested with Firefox 11 on new profiles on both XP x86 and Windows 7 x64 (with window grouping off, so each Firefox window has its own taskbar entry). 1. Open two windows and minimize the second window. 2. Restore window 2 by clicking on it in the taskbar and immediately click it again so it re-minimizes. (have to re-minimize really fast) 3. File/exit from window 1 sessionstore.js will now contain -32000/-32000 for position and 160x24 (or whatever your taskbar icon dimensions are) for window 2 and restoring previous session will result in the offscreen window. If during step 2 you Restore window 2, then wait a second, then re-minimize it the sessionstore.js will contain the correct dimensions/position for window 2.
Nice work, J S. It's reproducible here here on Windows 7. In step 2, to make sure you are fast enough, try clicking quickly 3 times on the minimized taskbar window entry.
This is a touchy area of the code so I've pushed this to try for a test run - https://tbpl.mozilla.org/?noignore=0&tree=Try&rev=a90f4d69aa9e
Try run for a90f4d69aa9e is complete. Detailed breakdown of the results available here: https://tbpl.mozilla.org/?tree=Try&rev=a90f4d69aa9e Results (out of 49 total builds): success: 43 warnings: 6 Builds (or logs if builds failed) available at: http://firstname.lastname@example.org
Created attachment 620908 [details] [diff] [review] patch v2 I've cleaned the patch up a bit (removed ugly bool flag/redundant code). Can I safely assume the two oranges in the windows debug build from try were unrelated to the patch?
Comment on attachment 620908 [details] [diff] [review] patch v2 Yeah it looks ok. Ran with this for a bit, didn't see any issues.
Thanks for the contribution James!