Firefox opens "off screen"
Greetings support team. The problem is a bit complicated and I could't find anything similar to it on the net, so I'll try to explain in details what happened. One day after opening the browser I noticed that it didn't launch(there was no window). After opening it again I saw that all of my previously opened tabs were gone. After that I closed Firefox and went to check the task manager. I found that Firefox was still running after closing it. I couldn't wrap my head around it and killed the programm. Then I opened it again and got the same results: first launch: no Firefox window(nothing on the taskbar either), secound launch: one empty tab. After that I opened a new tab in Firefox through task manager and my screen "swiped right", I got access to Firefox window with all of my previous tabs, but all the other programms I had opened on the taskbar were gone. Somehow Firefox opens outside my screen on a "separate one" every first time I launch the app, and the only way to switch between "screens" is to open a new tab through task manager or launch a program that was previously active to switch back to previous "screen". It is also impossible to switch between opened windows on different "screens" using gestures on the touchpad or "Alt" + "Tab". I use a laptop and never even tried to attach/connect a second monitor. I don't have another monitor attached via bluetooth or any other means in device manager. I have the latest verion of windows 10 installed and updated. I have another PC, where I use the same Firefox with the same addons on the same Mozilla account, which has no such issues. I have tried renaming the file called "xulstore.json" to "xulstore.old" or deleting it entirely, this didn't resolve the issue.
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nab.layk said
Somehow Firefox opens outside my screen on a "separate one" every first time I launch the app, and the only way to switch between "screens" is to open a new tab through task manager or launch a program that was previously active to switch back to previous "screen". It is also impossible to switch between opened windows on different "screens" using gestures on the touchpad or "Alt" + "Tab".
This took me down a rabbit hole of the multi-desktop feature. Could you take a look at this section of a video showing how to move things between desktops. Once you empty out an unwanted desktop, I think you can close it using the X button at the upper right of the empty desktop.
https://youtu.be/ZUttvpJMq8E?si=bFjhrVflLA8R_V97&t=211
*Edit* Later he says if you are viewing a desktop you can press Ctrl+WindowsKey+F4 to merge it into the previous desktop, so the windows of desktop 2 would move into desktop 1. That sounds faster but I've never tried any of this myself.
I have tried renaming the file called "xulstore.json" to "xulstore.old" or deleting it entirely, this didn't resolve the issue.
I think it's a Windows issue, but since you are already familiar with where Firefox stores screen position (xulstore.json), you could open the file in a text editor and sanity check the first group of settings (this is mine at the moment):
"main-window":{"screenX":"7","screenY":"0","width":"462","height":"126","sizemode":"maximized"}
Does yours show peculiar values for the first two parameters -- position -- or the second two parameters -- size? (I don't know why the height is so short on mine. Annoying.)
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nab.layk said
Somehow Firefox opens outside my screen on a "separate one" every first time I launch the app, and the only way to switch between "screens" is to open a new tab through task manager or launch a program that was previously active to switch back to previous "screen". It is also impossible to switch between opened windows on different "screens" using gestures on the touchpad or "Alt" + "Tab".
This took me down a rabbit hole of the multi-desktop feature. Could you take a look at this section of a video showing how to move things between desktops. Once you empty out an unwanted desktop, I think you can close it using the X button at the upper right of the empty desktop.
https://youtu.be/ZUttvpJMq8E?si=bFjhrVflLA8R_V97&t=211
*Edit* Later he says if you are viewing a desktop you can press Ctrl+WindowsKey+F4 to merge it into the previous desktop, so the windows of desktop 2 would move into desktop 1. That sounds faster but I've never tried any of this myself.
I have tried renaming the file called "xulstore.json" to "xulstore.old" or deleting it entirely, this didn't resolve the issue.
I think it's a Windows issue, but since you are already familiar with where Firefox stores screen position (xulstore.json), you could open the file in a text editor and sanity check the first group of settings (this is mine at the moment):
"main-window":{"screenX":"7","screenY":"0","width":"462","height":"126","sizemode":"maximized"}
Does yours show peculiar values for the first two parameters -- position -- or the second two parameters -- size? (I don't know why the height is so short on mine. Annoying.)
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Oh my God. Thank you so much! Yes, the problem was indeed in multi-screen feature of Windows. I prefer not to clog interface, so I removed most of the buttons from the taskbar. Because of this I didn't see task view button and couldn't formulate search request correctly.