Maximized stages do not resize when needed on Windows

[Christopher Schnick]

Oh, totally forgot about that for a few days. I will create one now

On 23/02/2026 01:59, Martin Fox wrote:
> Christopher,
>
> Did you enter a bug on this? I couldn’t find one. If you didn’t enter 
> one I will.
>
> It is a bug in JavaFX, we’re mishandling WM_WINDOWPOSCHANGING but the 
> bug appears to be in some Java code that I’m not familiar with 
> (notifyMoving in WinWindow.java).
>
> Martin
>
>> On Feb 16, 2026, at 1:51 PM, Christopher Schnick <crschnick at xpipe.io> 
>> wrote:
>>
>> Other non-JavaFX applications work fine, they stay maximized and 
>> resize to the new size. So probably JavaFX does not like resizing a 
>> window when it is maximized.
>>
>> On 16/02/2026 22:49, Thiago Milczarek Sayão wrote:
>>> I think windows will let you resize a maximized window, which is weird.
>>>
>>> The logical behaviour would be to unmaximize the window when moved.
>>>
>>> Em seg., 16 de fev. de 2026 às 14:32, Christopher Schnick 
>>> <crschnick at xpipe.io> escreveu:
>>>
>>>     On Windows, you can move a window (even if maximized) to another
>>>     screen
>>>     with Win+Shift+Arrow key. When doing this, a JavaFX stage does not
>>>     resize itself to the new screen if the other screen has a different
>>>     size. You get stuck with an application where the titlebar looks
>>>     like it
>>>     is in fullscreen, but it does not fill the screen.
>>>
>>>     I would suspect there is some kind of rule built into some
>>>     JavaFX part
>>>     that internally prevents resizing maximized windows? Because I
>>>     have only
>>>     seen this happen with JavaFX windows so far.
>>>
>>>     I can open a ticket for this, but I would have no idea how to
>>>     fix this
>>>     issue.
>>>
>
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