I would claim this is mostly unrelated to 26, and more related to .0. All the tech people that I know, who have experience with Apple OS releases, wait until .1 release to upgrade, for this reason. .0 are always a shit-show, since my first Apple device over 10 years ago. I see .0 as a public beta, and that's what I expect whenever I do decide to install them. I suspect there's some truth to this, where they don't have time to fix everything found in the actual beta.