FWIW, Claude (or Apple? I'm not sure who is releasing these things) shipped a brand new version of Claude Agent today April 24th. It's now a newer version than the one that we used to have in 26.4 (Claude 2.1.118)

Same here, filed it myself a while ago, no action on the ticket thus far: FB22388572

There are a couple of other threads on the OAuth issue. This morning I went into the Xcode components and uninstalled Claude Agent. Then I reinstalled it. SO FAR I haven't had a failed to authenticate, but it's too early to be sure.

I filed this feedback on the OAuth issue: FB22388572

I posted feedback FB22388572 for this. I didn't see anyone else call out a bug number.

Just wanted to chime in and co-sign the issues OP brought up. The OAuth and "thinking is in a bubble" issues being the most significant for me.