Emulator

Game Name?

N/A

Game ID? (right click the game in the game list, Properties, Info tab)

N/A

MD5 Hash? (right click the game in the game list, Properties, Verify tab, Verify Integrity button)

N/A

What's the problem? Describe what went wrong.

If "Render to Main Window" is turned on then enabling fullscreen always defaults to the primary monitor, regardless of where the Dolphin window is.
Additionally, with "Render to Main Window" turned on and full-screening on the same monitor the Dolphin window is on and then disabling full-screen causes clicking on the gameplay to unfocus the window.

What steps will reproduce the problem?

Monitor issue:

1. Turn on "Render to Main Window"
2. Move the Dolphin window to a secondary monitor
3. Turn on full-screen, it will open on the primary monitor instead

Unfocus issue:

1. Turn on "Render to Main Window"
2. Move the Dolphin window to the primary monitor
3. Turn on full-screen
4. Turn off full-screen
5. Clicking on the gameplay will now unfocus the window.

Is the issue present in the latest development version? For future reference, please also write down the version number of the latest development version.

Yes, 2603-180

Is the issue present in the latest release? For future reference, please also write down the version number of the latest release.

Yes, 2603a

If the issue isn't present in the latest release, which is the first broken version? (You can find the first broken version by bisecting. Windows users can use the tool https://forums.dolphin-emu.org/Thread-green-notice-development-thread-unofficial-dolphin-bisection-tool-for-finding-broken-builds and anyone who is building Dolphin on their own can use git bisect.)

N/A

If your issue is a graphical issue, please attach screenshots and record a three frame fifolog of the issue if possible. Screenshots showing what it is supposed to look like from either console or older builds of Dolphin will help too. For more information on how to use the fifoplayer, please check here: https://wiki.dolphin-emu.org/index.php?title=FifoPlayer

N/A

What are your PC specifications? (CPU, GPU, Operating System, more)

Windows 10 IoT Enterprise LTSC 21H2
CPU: AMD Ryzen 7 1800X
GPU: NVidia GTX 1080 Ti

Is there anything else that can help developers narrow down the issue? (e.g. logs, screenshots,
configuration files, savefiles, savestates)

https://www.youtube.com/watch?v=nI-4CAfH2bs Notice the top of the window changing from blue to white. - Unfortunately OBS blackscreens both monitor recordings when going full-screen so it wasn't visible at the end how it full-screened on the first monitor instead of the second.
Visible in the video too but tested on a fresh portable.txt version.