Hover will show the contents even misspelt :-) on hover.
These are tooltips that read the contents field and show them up to a point as comments should be short observations and replies (not an wikipedia article with history from 2000 BC)

Compare that with how much edge offers on hover

so to see more in Edge you need to open the editing box, Hmm latest Powered by Acrobat is not saving the MSEdge edits !! Thats odd, thought it did with the older chromium versions.