To bad that six release candidates (RC0 - RC5) were made available over a period of several weeks, and noone spoke up about this issue then

The issue has been around for a couple of years - well before the 5.12 release candidates arived on the scene. Not exactly sure just why noone has done anything about it ... maybe it's something that's very tedious to fix and people are afraid to complain vigorously lest they be given the job of applying the fixes.

Cheers,
Rob