Thanks for your eager willingness to test nightlies! It's very appreciated!
But this time I suggest, you wait a few more days.
I am currently working on a regression, which was introduced with the addition of Message Carbons (OF-818). Because code has to be touched, which also affects Message Carbons logic, it's probably better to test if this is fixed, too. So we can be sure, that Message Carbons still work, after
OF-818 has been fixed.