CommentStreams:32e0a91fcdda1f5abda546abc9ba7e60

Yes, it is sloppy programming by the devs. If you check the network traffic, you notice that there is still a level 6 and I assume their client code just ignores level 6 and treats it as level 5 while the server does not do so. The problem occurs only if you repeat level 5 but not the first time you reach level 5. As usual, if it is not in our favor, there will be no fix. Complain to customer support in-game