On November 17th we pushed out a hot fix for a few issues that could cause people to crash while using the CB. Now we rushed to get that hot fix live after testing it internally, and in the end, we actually caused a few different crash issues. We rolled back to the launch data around 10:30 on the 17th and that fixed those problems that the hot fix had caused.
Since then we have looked into the problems, created some more fixes, and we are currently testing those internally. We're going to move a bit slower this time and from now on to make sure we avoid the issues of the last hot fix. We're definitely still looking into and investigating crash and lag issues, and when we're ready to push another fix I'll let you know.