Hi, I have also not determined a pattern. It's often if I pause for a while. Guaranteed to need a long overnight. But also happened during a session. I agree about the thought bubbles. They are almost pointless if you can't read them. Claude has got slower more recently, may be due to the influx of users due to political affairs. Re: Codex & Claude showing: Up until 26.4 beta 3 and before you selected your agent to use and then from then on you just hit new session/chat. In 26.4 rc there is no choice of active agent. All you do is click new session/chat. When you tap the button a pop over appears requesting the agent you wish to use. It's a very jarring workflow... Hopefully this isn't coming across as too negative. The agentic development flow is amazing, it just needs the warts removed :) I can't reply inline because it limits the characters. Maybe that needs feeding back to the website team. It feels like "we don't want people to engage when the replies are artificially curtailed"

Yes I must admit the same issues. I have claude and anthropic signed in. I want to select a model and then just use that every time I click new message. I don't like the mental burden of having to select the working model every time I click a new message. I have the other issues listed as well, sometimes it just stalls and I need to send another message to get it going again.

Switching to another navigator makes no difference for me.

Yep, it's unusable for me. There is a note in the betas saying go to project view to speed it up. cmd-1. This doesn't help for me.