They seem to have ironed most of the problems now. You can disable liquid glass if you hate it, and as a result iOS 26 is nearly as good as the previous version. I’m running it on my iphone12. I hated it when it first came out. But it seems fine now.
Really? iOS Guided Access is bugged on the whole 26, and I have been encountering system freeze many times on 26, never before on any other versions.
I don't know how you're using it. The most broken (so it needs to be restarted sometimes) is Podcasts, but Music, Safari, Settings etc have glaring visual glitches too.