Camera Zoom doesn't function properly in 21:9 (ultrawide) resolution

As the subject says. Post-SWL release I’ve switched from a standard 16:9 display to 21:9 at 2560x1080. Holding down ctrl to have the mouse wheel control camera zoom doesn’t work, the only way to change zoom is to change from freelook to cursor mode, at which point the mousewheel works fine. I’m positive the resolution is the culprit because if I simply change it back to 1920x1080 or another non-ultrawide resolution, it works fine again.

Unsupported resolution, so it’s not technically a bug.