[BUG] Fullscreen uses both monitors in error

[vanessakindell]

Using Q-Zandronum 1.4.11 - 2023-11-26 18:04:04 -0500 - SDL version
(from the latest release here on GitHub.)

When I try to put the game in fullscreen, it takes both monitors as part of the screen instead of staying on the one.
I've tried tweaking numerous settings to try to resolve it and using both Software and OpenGL render options to no avail.

--In-game console outputs--
vid_displayadapters output: Multi monitor support unavailable
vid_adapter output: Unknown command "vid_adapter"

Full command line output https://pastebin.com/cmNtHDv1
My neofetch info: https://pastebin.com/nndsDTmV
My system info: https://pastebin.com/bgwPytGp

[IgeNiaI]

Does this happen on vanilla Zandronum too?