Of course, nearly 100% of the times the behaviour people were complaining about will be part of the stable release. There is no magical moment where things just magically get sorted pre-release unless people voice feedback, especially if it's intended behaviour, as it's very much the case here. So call me jaded, when someone says "it's just the main branch, don't complain!" I just hear "I will do whatever I want and when the new release rolls in everyone will just have to deal with it." Which is totally fair if that's how you want to run your project, just don't pretend otherwise.
An extra one, which isn't the case here but makes me roll my eyes every times it happens is the outrage of "how dare you raise an issue that was caused by a new pre-release iOS/MacOS version and very much seems to be an intended change in the OS behaviour, we don't support that!!", only for it to turn into the usual scramble "oh no, our software is broken on the new iPhones, who could have forseen this!!?" hours after the release version starts hitting the masses.