# Agent chat randomly disallowing user input

**URL:** <https://forum.cursor.com/t/agent-chat-randomly-disallowing-user-input/149143>\
**Category:** Bug Reports\
**Tags:** chat\
**Created:** [January 17, 2026, 1:54am UTC](https://forum.cursor.com/t/agent-chat-randomly-disallowing-user-input/149143 "2026-01-17T01:54:50Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [January 17, 2026, 10:39am UTC](https://forum.cursor.com/t/agent-chat-randomly-disallowing-user-input/149143/3 "2026-01-17T10:39:37Z")

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Hey, thanks for the report. This is a known issue and the team is aware.

A similar case came up in [this thread](https://forum.cursor.com/t/chat-text-field-unexpectedly-stops-working/147756), where a user debugged it and found that `defaultPrevented` is blocking keyboard events. It usually happens in long chats.

Try this workaround, it sometimes helps:

1. Press `Ctrl+Shift+P` in the chat window
2. Select “Developer: Reload Window”

If that doesn’t help, the only option for now is to start a new chat.

To help the team investigate, can you share:

1. About how many messages were in the chat when this happened?
2. Do you see any errors in the Developer Console (Help \> Toggle Developer Tools \> Console tab)?
3. Are you using multiple monitors, or opening the chat in a separate window?

I’ve added your report to help raise visibility on this issue.

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_[View the full topic](https://forum.cursor.com/t/agent-chat-randomly-disallowing-user-input/149143)._