This is an odd issue that I haven't found a post on.
I have two primary types of hotkeys to manage windows.
Set one: WIN-1 through WIN-4 to relocate my view to workspaces 1 through 4.
Set two: WIN-! through WIN-$ (e.g. shift 1 through 4) to move the current application to workspaces 1 through 4.
That second set of hotkeys is not working. I've double-checked and there is no conflict with other hotkeys.
The hotkeys themselves are accepted by the settings program, so I know that the window manager is receiving the signal.
Also, I do have the correct number and dimensions of workspaces set up. I can manually move windows between workspaces without issue.