MCP App UI causes chat to be jittery on mobile but not on desktop
OpenAI Developer Community
May 8, 2026
Figured this out. I was inadvertently setting a min height on the UI to 100%. I’m guessing that was being used to determine the size of the iframe and was probably leading to a weird feedback loop causing continuous resizing. Removed that and it works now. Sharing in case anyone else makes this mistake.
Discussion in the ATmosphere