Apologies if these have been mentioned before. Both of these disrupt navigation through an OP's messages.
- If the OP name changes to a name that only differs in case (e.g. "mustermark" for my account), then new messages are not highlighted as OP, but the "See next" link still takes you to that message. There is no further "See next" link from the unhighlighted message.
- If an OP message is deleted, then the "See next" link from the previous message will take you to the deleted message, but you can't continue as the deleted message has no "See next" link.