There is a similar confirmed bug related to force blocking. It would be nice if that one was fixed along as well.
https://forums.mtgo.com/index.php?threads/must-be-blocked-ability.94/
Play Bruna, The fading light as a commander. Meld her into Brisela. She will stop doing commander damage, and if she dies there is no commander tax added into her.
I think the bug is with the party mechanic final number. It counts the number of creatures, when the number of creatures is irrelevant. What matters only is the number of creature types that have been spotted.
Some bugs are gamebreaking and it would be nice if we knew when are they going to get fixed. Appreciate the work but bugs need to be at the highest priorities.