I spent an hour speaking with three different Adobe representatives, and none of them were able to provide an answer. One even suggested I download an older version via Creative Cloud. I'm genuinely surprised by the poor quality of Adobe's customer service.
This is not a glitch unfortunately, but it is what they called new "redesigned" brush panel - it is horrible and very uncomfortable to use now! Please roll back this update!
No solve either but also reporting the same problem - I can still access vector brushes via pixels / all brushes (ie. The long way round) but this is a real drag and time consuming.
I don't have a solve but I am responding hoping someone with a solve will jump in as I am having the same problem. My live and vector brush have disappeared. I pretty much only use it for vector drawing. The last time I used the app was on the 28th and all was good.
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