Find and Replace dialog box show weird characters

I've had 2 users affected by this issue. One one of my users, it just started out with the search, but then got worse and affected entire spreadsheets. Updates and clearing browsing data did nothing. Switching from Chrome to Edge resolved it for about 24 hours before it came back. This user had one of the older computers we are trying to phase out so I switched his computer for a new one and that only fixed it for a couple of days. Ended up seeing if desktop excel was affected and so far that proves to be a good workaround. My other user affected is still only affected by the Find text input.