MCP Apps do not supporting user text inputs

Support Bug Reports
, , ,
1

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 this issue in datadog we replaced our text box with a form, but we’d like to bring back the native text element after this is fixed.

Steps to Reproduce

Install the slack plugin and ask the agent to help you draft a message

Expected Behavior

Users should be able to type in MCP app text inputs without getting redirected

Screenshots / Screen Recordings

Operating System

MacOS

Version Information

Version: 3.6.31 (Universal)
VS Code Extension API: 1.105.1
Commit: 81fcf2931d7687b4ff3f3017858d0c6dee7e2a60
Date: 2026-05-31T17:46:29.630Z
Layout: glass
Build Type: Stable
Release Track: Default
Electron: 39.8.1
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
xterm.js: 6.1.0-beta.220
OS: Darwin arm64 25.5.0

For AI issues: which model did you use?

Haiku 4.5

Does this stop you from using Cursor

No - Cursor works, but with this issue

5

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
Commit: 80c653c2c3528e65016a0d304b54486084b470b0
Date: 2026-06-07T01:42:56.126Z
Layout: glass
Build Type: Stable
Release Track: Nightly
Electron: 39.8.1
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26200

7

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.

11

Hey @Cameron_Yick!

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

12

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
image1836×934 81.8 KB

Slack

image
image1804×876 113 KB

Datadog

image
image1820×950 106 KB

Here’s my latest version info in case it helps.

Version: 3.10.20 (Universal)
VS Code Extension API: 1.125.0
Commit: 23b9fb205fe595ea2be29da7214e19762d037fc0
Date: 2026-07-07T07:03:33.071Z
Layout: Agent Window
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Darwin arm64 25.5.0
13

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