Hi!

I'm on Windows 10 21H2, and DisplayFusion 9.9 Steam edition.
I am using a Dell 49" ultrawide U4919DW 5120x1440 monitor, with 4 vertical zones (splits).

Most of the times when I trigger my Windows Position Profile, or when it is triggered by a rule, the windows that I have ticked to Maximize do so across the entire screen, ignoring my splits. If I click the Maximize button in the title bar of one of these windows, it fills the virtual monitor nicely as it should.

Please advise.

Hi Owen, thanks for getting back to me.
No, none of the maximized windows have this option checked.
Also, do note that it sometimes works (one or more of the windows conform to the splits), it's just kind of rare. Mostly they go wide.

It happens mainly with Firefox and Thunderbird, but occasionally also with Deezer. The 4th window I have set to maximize in this Windows Position profile is Netflix, which isn't often open.
None of the windows I have NOT ticked as "Maximize" ever blows up to fill the entire monitor.

Hi Owen, here you go. Log is kept very tight to just the test attempt, not much "fat" on it. Rough time of test (seconds is a guess) = 19:07:20.
Test was done by hitting my keyboard shortcut for applying my Windows Position profile. Before I hit the shortcut, Thunderbird was already correctly placed and maximized to its virtual monitor, whereas Firefox had been sized to half the screen width (= covering the two rightmost virtual monitors). Both Firefox and Thunderbird did the "ignore splits" thing.
Please let me know if you need me to test another way. Thanks!

It looks like it briefly snaps to the virtual monitor (the split zone), and then goes wide.

Hi Owen, here you go. Hope it helps!

Hey Owen, thanks for the suggestion.
I followed your advice, but the issue still occurs, sorry to say.
Are you using a monitor that's 5120 pixels wide?

Hi Owen, I don't have Notepad in my Windows Position profile, but since you asked, I tried adding it just to see.
It went wide the first time I hit my shortcut to trigger the profile, but I haven't been able to reproduce it some 30+ attempts since.
I will say that the results are never consistent. If I simply keep hitting the shortcut, the 5120px-wide-windows will sometimes go back to proper position and size again.
I perhaps should also mention that my Windows toolbar is docked against the left side of the screen (not the bottom) - did you have yours there while testing? Perhaps it has an effect?

Appreciate the follow-up, Owen.
Thing is, with a screen this wide, having the toolbar at the bottom seems an awful waste of real estate - so I'm not keen to move it back.
Hope you'll fix it soon.