Since 1.20.5 Agents keep freezing

I have a google AI Ultra Account which I bought for Antigravity.

Since the Auto-Update of Antigravity to 1.20.5. the agents got freeze all the time. In agent Manager every time I send a prompt it keeps staying on “working…” . So I can’t work. Im on a MacBook M2 (macOS Tahoe 26.2). before it works all fine. As I have some time pressure I need to get it to work again.

I tried to get it back to 1.19.6 by suggestion of Gemini. But it does not work it still freezes. Before that autoupdate it works like a charme.
As I see here, there are many different problem by people (especially on a mac) since 1.20.5
Is there a fix on that?
Unfortunately I got no response from Google Support on this.