Haven’t encountered any bugs myself in X.04 or X.05. It’d seem the bugs have occurred in fairly specific circumstances (complex midi setups or whatnot - I’m mostly using the MD standalone so I wouldn’t know, ha) and the devs have also been able to fix (most of?) them.
Already said it multiple times but for me the X.04 update was nothing short of a revelation. Getting new, very useful gnd machines and having the ability to tune stuff to actual notes opened the MD to a sea of possibilities for me. Like several people have said, this update essentially turned a fantastic drum machine to a very capable groovebox.
Obviously there’s a lot more to these updates but these features alone were gamechangers for me.