Qubes 4.3.0: Win11 HVM Alt + Scroll wheel zooms the desktop instead of Photoshop content

I am using Qubes 4.3.0 and have set up a Windows 11 HVM with the latest Qubes Windows Tools. Within this VM, I am running Adobe Photoshop (CS 5.5).

The problem:
In Photoshop, it is standard to use the Alt + mouse wheel combination to zoom in or out of an image. However, in my Qubes environment, the following happens: As soon as I use the Windows VM in fullscreen mode (toggled via Alt + F11), Alt + mouse wheel does not trigger the zoom within Photoshop; instead, the entire desktop view of the VM is magnified or shifted.

Question:
How can I configure it so that the Alt key is available exclusively to the application (Photoshop) within the Windows HVM, without the Qubes window manager interfering?

Thank you very much for your help!