Grabbed mouse is set to very inconvenient position

[rtificr]

When set_cursor_grab(true) is called, the mouse is set to a position that would be something like screen_width/2, screen_width/2, though the placement of it doesn't place it in the center of the window, but rather the center of the window if the window was as tall as it is wide. The mouse should instead be set to screen_width/2, screen_height/2.
The main problem is that it highlights apps on my taskbar, which is an eyesore and opens the app whenever I click.

I'm using MacOS Sequoia 15.1.