Copying in Teams is messed up similarily where selecting message content also copies the timestamp and sender name even thought the selection shows otherwise.
Today when I started typing, my cursor remained in the leftmost position and all of the characters appeared one by one to the right, effectively reversing all the text. I can't make this up.
This is the behavior of the Unicode Right-to-Left Override character U+202E. Meant to embed Hebrew or Arabic text, it is most used by hackers to change their exploittxt.exe attachment to read exploitexe.txt