Following up after digging into this further - it’s a known issue on our side, and it’s the same one we’re now tracking internally. The interactive MCP App widgets aren’t mounting for setups like yours right now: the tool itself still runs (that’s why you get the text result), but the inline widget doesn’t render. This isn’t your server or config, and it isn’t something you can toggle on your end.
Two things that’d help us pin it down:
- Does the widget fail on every tool call, or does it occasionally render?
- Does a window reload (
Cmd+Shift+P→ “Developer: Reload Window”), or toggling the MCP server off and back on in Settings, ever make it appear? If it does, that’s also a temporary workaround.
I’ll update here once there’s progress.