I thought I'd give this another test in 5.05. What I have established is that both problems persist if you simply cmd-C then cmd-V in Word. However, if you cmd-C then summon the Clipboard Manager and cmd-1 instead of cmd-V then the issue does not occur.
It's a bit more fiddly with tables, but with cross-references you can see that if you cmd-C then cmd-V the Clipboard Manager has two entries for the copied text: the act of pasting with cmd-V seems to create a second corrupted version. If this has happened then cmd-2 will paste the intact version…
Thank you for removing the images from items copied from Word and Excel by the way! (Show more metadata for items in clipboard manager - #4 by rickogorman)