I have this problem on my Macbook Pro M4 - one week old. I did place my own kits in the presets folder and they show up, but the main kits don’t. I didn’t download the latest kits installer - too big for my slow internet line - so I’m only referring to the new standalone instrument update, not the entire kit library download.
Nonetheless, I’m glad it’s an acknowledged bug. At least we can expect it to get fixed.
Considering how long ago this issue was reported and the lack of support response to several open forum questions on the subject…I’m not holding my breath. Too bad. I wonder how long the old authorization system will be maintained?