A family of Microsoft word processing software products for creating web, email, and print documents.
Exactly which older version were you instructed to install? IMO reverting to an older version of software when running a significantly newr version of the OS can case more problems than it resolves.
In this case, the suggestion I offered earlier to disable Comments on rollover applies to the Track Changes popup/cards as well as Comments. So does the use of esc or moving the pointer. There was no need to revert to a past version of Office. I hadn't specified this because I thought we were dealing only with Comments at that time.
BTW: These screenshots are from the recently released Word 16.115 but those Preferences have never been removed from the generally distributed software. If you are actually using a managed version [Education, LTSC, etc.] it might make a difference.