I wasn’t able to finish my session on Sunday because of this bug (ticket #962534 for reference; I didn’t log anything manually), and now the app is asking me “Do you want to mark it as complete?” which is rather silly because the only choice I’m given is “Yes, mark as complete.”
Urgh, I’m sorry to hear that this has affected you. I can’t see any other reports of this bug being back but I’ll take another look.
Re this Marking it as complete isn’t the only option you have. If you scroll back to the session that isn’t complete, you can actually log any remaining part of the session should you want to