Thanks for the report - we will look into it.
Just for future reference - best to report possible bugs using official blocks (this applies to any such report) rather than modified ones - even if the modification is considered trivial and not relevant such as a category change.
I spent a bit of time investigating your version of the blocks before trying the official MQTT category ones to see that they had the same effect
Replacing Uint8Array
with the plain Array @ mqt_binary...
does the trick for me.
Pull request made to Jens with the fix
thanks :)
thanks