Okay, stumbled upon the hack attack yet again. The only thing the 2 entries which suffer this affliction have in common in that one has "Mr." in the title, and the other has "Dr." which I assume are well known hacking vectors? Neither entry can be saved with or without edits, but I was able to post them originally.

My best guess is that maybe the dot is being treated as a file navigation hack which is odd if there is no slash after it.

It's not a critical bug so I can't fix / investigate without sponsorship.

Of course. Removing the , from the title allowed the edit to go through, then I replaced the .

You had a comma in the title as well?

No, it was a period. Typing in the dark.