Changing Fill color in Illustrator doesn't register as a change.

So I've got a weird thing happening in Illustratror 23.0.2: Whenever I change the color of an object (eg, say I have a rectangle with fill, and I change the color of the fill by entering values in the color panel), illustrator changes the color just fine, but doesn't register what I just did as a change. A little asterisk doesn't pop up by the file name to indicate I have unsaved changes. If I save the file, then close and reopen, it's like the color change never took place. If I hit "undo" the color reverts, but it also undoes the action that came immediately before the color change. If I change several colors in a row and hit undo, they all revert, as does whatever action I took before the color change.

Anyone else experiencing this behavior? Any ideas on what might be happening or how to fix it?