Where does the bug appear (feature/product)? Cursor IDE Describe the Bug MCP apps lose focus as soon as you start typing inside them, the focus is transferred to the message box. This affects at least 2 independent MCP apps, including Datadog and Slack. See attached videos for examples. To avoid t…

Hi @Colin , After upgrading to the latest 3.13.25released on Jul 28, , I’m seeing the issue is fixed for me in both the Slack and Datadog MCP servers, I’m able to type in both. Thanks for following up on this!

Hey @Cameron_Yick , thanks for your post, all the needed details are there, and I also was able to reproduce the comportment on following version of cursor, I will be pinging the team about it! 8a2507a7-db71-47ac-9acf-69313ca73682 Version: 3.7.19 (user setup) VS Code Extension API: 1.105.1 Commi…

Hi @Cameron_Yick ! We’re already in touch with the Datadog team about this and have a bug open on our side. Thanks for flagging.

Hey @Cameron_Yick ! Thanks again for the report. This should be fixed in v3.10+ of Cursor. Give it a try!

Hi @Colin thanks for the update. Unfortunately after upgrading, MCP apps stopped rendering completely (for Slack, Datadog, and just in case it’s specific to apps that required login, tldraw . In each case only the text fallback appears instead of the HTML window. TLDraw [image] Slack [image] …

Thanks @Cameron_Yick . I think that’s being covered over in this thread. [image] MCP Apps stopped rendering in 3.10.20 (worked in 3.9.16) Bug Reports Following up after digging into this further - it’s a known issue on our side, and it’s the same one we’re now …

Hi @Colin , I upgraded to the latest version 3.12.17 , unfortunately I am still experiencing the same user text input error. Version: 3.12.17 (Universal) VS Code Extension API: 1.128.0 Commit: 0fb762053c34788bb7760d5673f8a6d4c8589d50 Date: 2026-07-17T02:53:53.006Z Layout: Agent Window Build Type: …

Appears to be working again! [image] MCP Apps stopped rendering in 3.10.20 (worked in 3.9.16) Bug Reports It’s possible that this may have been fixed sooner than this version but I am seeing MCP apps appearing again after upgrading to Cursor 3.12.17 on MacOS. …

Hi @Colin , I think keeping this thread open is still relevant since the other thread is about MCP apps not appearing at all, whereas this thread is about user text inputs not working even if the MCP app does appear. Let me know if I misunderstood, or if grouping the issues differently is helpful t…

@Cameron_Yick Just to confirm, you are seeing MCP apps now but text input is still affected?

Correct, I’m seeing MCP apps after upgrading to 3.12.17 , but the text inputs are not usable.

MCP Apps do not supporting user text inputs

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Colin (Colin) July 9, 2026, 2:19pm 13

Thanks @Cameron_Yick. I think that’s being covered over in this thread.

MCP Apps stopped rendering in 3.10.20 (worked in 3.9.16)

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MCP Apps do not supporting user text inputs

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