Whenever a Tag has an apostrophe like lets assume there is a tag named "Queen's Winery", then it doesn't show up as selected in the EDIT screen on the frontend. For example: hidden link hidden link
But posts with normal tags without apostrophe, shows up normally as it should be. hidden link
During further testing, I was able to reproduce this issue on my test website as well. If a term in flat/non-hierarchal taxonomy (like Tags), includes an apostrophe character, it breaks the display of selected terms for that taxonomy in the post edit form.
(not only does this term with apostrophe doesn’t show, but any other selected terms without an apostrophe won’t show either)
I've shared these findings with the concerned team and will keep you updated through this ticket.
I'm afraid, the only workarounds, for now, would be either switching to the hierarchal taxonomy or avoiding the use of terms with apostrophes.