In Mikrotikish.
Plain English has a not so subtle different meaning for that word, JFYI (corollary to Rule #10):
The twelve Rules of Mikrotik Club
Translated from Mikrotikish, Beta means pre-alpha, RC means early Beta, stable means RC, rinse and repeat on a newer version, now you know. (if it ain't broken, don't fix it).
I feel your pain, but unfortunately it is what it is, before changing version on a complex, multi-layered network there is the need of testing everything in all possible ways (+1).
Actually I am very grateful to people like you that have the guts to apply these new "stable" release to production devices and report their experience, and you just confirmed that devices without a console access should not be used in complex networks.