pcsx2 [BUG]: Mouse lock option not working correctly

Describe the Bug

https://github.com/PCSX2/pcsx2/issues/11902

The mouse cursor is constrained to a box partially outside the main window. The same thing happens in fullscreen and windowed:

https://github.com/user-attachments/assets/0f9c4a9c-90e8-4198-9872-229331f4d671

Reproduction Steps

Was checked on a fresh new portable install, only the mouse lock option was changed.

Expected Behavior

No response

PCSX2 Revision

v2.3.350

Operating System

Windows 10 (64bit)

If Linux - Specify Distro

No response

Logs & Dumps

No response

May 22 '25 03:05 chrism69

Can't test this on Linux Wayland as we explicitly do not currently support it there, but @JordanTheToaster on Windows 10 has expressed he was unable to reproduce as of latest nightly.

May 27 '25 12:05 TheTechnician27

I just tested it again on a new portable install of v2.3.387, I still get the same issue.

May 31 '25 04:05 chrism69

As an update, I've now tested this on a new PC, now Windows 11 with an Nvidia card (previously was 10 / AMD) and the exact same problem remains as of v2.5.225.

Oct 14 '25 04:10 chrism69

I think I have figured it out.

What's the DPI of your monitor(s)?

Oct 16 '25 22:10 F0bes

Do you mean scaling? I have a 4k screen at 150%, I just set it to 100% to check and it worked fine, so that could be the problem.

Oct 18 '25 09:10 chrism69

Yeah, that's the root issue.

I believe I have it fixed on Windows, just need to test Linux a bit more. A fix should be in this week hopefully :)

Oct 18 '25 12:10 F0bes