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Fixed in 2018.4.0f1
Fixed in 2018.4.X, 2019.1.X, 2019.2.X
Fullscreen mode: Maximized Window functionality is broken and any built Player changes to Non-Window mode when Maximizing
How to reproduce:
1. Create a new project and open its Player settings
2. Under the "Resolution" settings change the "Fullscreen Mode" to "Maximized Window" and checkmark the "Resizable Window" option
3. Build the project
4. Run it in fullscreen mode (The Player will be fullscreen in non-window form)
5. Run it again in windowed mode and maximize the window (The Player will still be in fullscreen non-window form)
Expected result: when maximizing the player is still in window mode
Actual result: maximizing the player results in it changing modes to regular fullscreen, making the title bar disappear
Reproduced in: 2019.2.0a8, 2019.2.0a6, 2019.1.0b7, 2019.1.0b5, 2018.3.9f1, 2018.3.8f1
Not reproducible with: 2019.2.0a5, 2019.1.0b4, 2018.3.7f1, 2017.4.23f1 (The 2017.4 versions had a separate D3D11 Fullscreen Mode setting which works as expected when setting it to Exclusive Mode)
Fixed in: 2019.2.0a15, 2019.1.2f1, 2018.4.0f1
Dec 21, 2020 20:16
This is broken in 2019.4 we still need a fix.
Sep 02, 2020 17:38
Maximise window mode not working in 2019.4.9f1 for Windows 10.
May 14, 2020 06:22
Not sure if this is related, but when maximizing the game window in mac osx the position of objects in the UI move and are not interactable where the UI objects are. For example, you click on the button but to interact with the button you need to click an inch up from where the button renders. Tested on 2019.3.0f5 and 2020.1.08b
Dec 06, 2019 00:36
I have same issue in Unity 2019.2.7f2
Dec 03, 2019 23:20
Nevermind, a fixed this by setting fullscreen mode to windowed and setting "allow fullscreen" to false. Now, it maximizes normally when maximizing.
Dec 03, 2019 23:12
Reproducible in 2019.3
Jun 28, 2019 20:58
I also have same issue in 2019.1. After I build and run the app on a Mac my game is stuck in 4:3 aspect ratio. With no choice to pick another one. My game is in 16:9 and I keep running into this issue with other projects. I have the correct settings in player settings. It just wants to only build in 4:3. I tried to fix it in code and we’ll it kinda worked. But had a backdrop of my background colour. Oh well. I’ll keep searching before I down grade. Frustrating.
May 13, 2019 11:56
This is very strange, let me get this straight.
if i am building with "Maximized Window" it should open the application in Maximized Window.
i tried both version 2019.1.2f1 and 2018.4.0f1 and its opening the app on FullScreenWindow.
am i missing something?
May 01, 2019 15:09
The fix is scheduled for 2019.1.2 which is due in approximately 2 weeks. See:
Apr 29, 2019 14:58
This was not fixed in 2019.1.0f2
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Resolution Note (fix version 2018.4.0f1):
The behavior of the Maximize button was changed in order to fix another (more serious) issue: https://issuetracker.unity3d.com/issues/buttons-dont-record-input-when-the-window-is-maximized-and-then-set-to-2560x1080-resolution
Clearly we made a bad call. So, we've implemented a different fix to the aforementioned bug which also maintains the correct maximize window behavior.
A workaround to automatically revert the app out of fullscreen mode can be found here: https://forum.unity.com/threads/unity-2019-1-is-now-available.661885/page-3#post-4491478
Verified fixed in: 2019.2.0a15, 2019.1.2f1, 2018.4.0f1