It's definitely it's related to having different scaling factors on each monitor. I switched my 4K one to do 1080p at 100%, which matches the secondary monitor, and the issues don't occur. @Lowlander, if you're testing make sure you have the scaling factor different between them ("System Settings > Display > Change the size of text, apps, and other items"). That's not the same as just having different resolutions.
The titlebar clicking/dragging issue looks like it might be (at least partially) related to switching which monitor it's on, and I think it might be an invisible control blocking the mouse interactions. After dragging it from my 100% monitor to my 200% one it got into that state where none of the space to the right of the menu items was functional. If I then resized the window wider than the 100% monitor would have allowed, some of the titlebar reacted and some of it didn't:
I can get it into that state pretty reliably, and if it restores to the secondary monitor on startup, that can trigger it even if I haven't manually moved it between monitors. The dead area isn't consistently to the right of the functional area; sometimes they're swapped.
Also, if I drag from my 200% monitor to the 100% one, clicking on the menu items opens the submenus offset from the where they should be:
Maximizing/restoring the window when it's in that state kicks things and it generally starts behaving correctly.
Two other related issues I noticed when dragging between monitors forces a rescaling: (1) The window doesn't resize even though the controls themselves do, so it's too big/small relative to what it was on the other monitor. Windows normally does that automatically. (2) the minimum constraints aren't scaled either, so you can get into a state where the window is taking up most of the screen but can't be made smaller because the constraints are correct for the 4K monitor rather than the one it's currently on.
@Barry4679: Are you referring to the fact that the taskbar icons are collapsing in groups ("Combing taskbar buttons: Always, hide labels")? The taskbar itself is always present; I don't have it set to hide. I do have "Show taskbar on all displays" turned on. Disabling that didn't change anything.
It's definitely it's related to having different scaling factors on each monitor. I switched my 4K one to do 1080p at 100%, which matches the secondary monitor, and the issues don't occur. @Lowlander, if you're testing make sure you have the scaling factor different between them ("System Settings > Display > Change the size of text, apps, and other items"). That's not the same as just having different resolutions.
The titlebar clicking/dragging issue looks like it might be (at least partially) related to switching which monitor it's on, and I think it might be an invisible control blocking the mouse interactions. After dragging it from my 100% monitor to my 200% one it got into that state where none of the space to the right of the menu items was functional. If I then resized the window wider than the 100% monitor would have allowed, some of the titlebar reacted and some of it didn't:
[img]https://i.imgur.com/k9F5227.png[/img]
[img]https://i.imgur.com/PvXYqh8.png[/img]
I can get it into that state pretty reliably, and if it restores to the secondary monitor on startup, that can trigger it even if I haven't manually moved it between monitors. The dead area isn't consistently to the right of the functional area; sometimes they're swapped.
Also, if I drag from my 200% monitor to the 100% one, clicking on the menu items opens the submenus offset from the where they should be:
[img]https://i.imgur.com/jF8SMye.png[/img]
Maximizing/restoring the window when it's in that state kicks things and it generally starts behaving correctly.
Two other related issues I noticed when dragging between monitors forces a rescaling: (1) The window doesn't resize even though the controls themselves do, so it's too big/small relative to what it was on the other monitor. Windows normally does that automatically. (2) the minimum constraints aren't scaled either, so you can get into a state where the window is taking up most of the screen but can't be made smaller because the constraints are correct for the 4K monitor rather than the one it's currently on.
@Barry4679: Are you referring to the fact that the taskbar icons are collapsing in groups ("Combing taskbar buttons: Always, hide labels")? The taskbar itself is always present; I don't have it set to hide. I do have "Show taskbar on all displays" turned on. Disabling that didn't change anything.