Bug: "Thought" view freezes browser and app (Thinking model)

I’m using the Thinking model and the “Thought” view in conversations is causing serious performance issues.

It’s much worse than just a small lag — the browser completely freezes for several minutes. Even after refreshing the page, it still gets stuck, and I’m using a powerful PC, so this shouldn’t be a hardware limitation.

In the app it’s even worse: it totally locks up, which looks like some kind of memory limit or memory leak.

Is there a way to hide or disable the “Thought” view completely, or at least load only the final response without the internal reasoning, so the browser and app won’t freeze?

Exactly the same here with the new version on macOS 26.2. Although it doesn’t matter the model, if I use it with multiple messages, it freezes.