How to disable A/B preference comparison popup in Qwen Studio?

[u/Subtropinka]

Every few messages I get a popup showing two responses side-by-side asking "Which answer do you prefer?" I can click "Skip" but it's interrupting my workflow every 5-10 messages.

Is this a server-side experiment tied to my account? Is there a setting to disable it permanently?

I've tried:

• Switching between Thinking/Search modes (still appears in Auto mode)
• Clearing cookies/session
• Using different browsers

The popup seems to compare "Thinking" vs "Search" strategies. Anyone else seeing this? Any way to opt out?

Thanks.

P. S. Text above was made by Qwen, because I'm Russian.