Where does the bug appear (feature/product)? Cursor IDE Describe the Bug Max Tab Count: If set to 1, creating a New Agent causes a crash. You must restart Cursor to create a new one. This issue only occurs in the newly updated version 3.1; the previous version would simply show a prompt, and you co…

This is a known bug. When Max Tab Count = 1, the tab replacement logic gets stuck in a loop, which causes a crash and high CPU usage. Workaround: set Max Tab Count to 2 or higher. This should prevent the crash, and you’ll be able to create new agents normally. The team is aware of the issue, but t…

[BUG] New Agent causes a crash

Support Bug Reports

Topic		Replies	Views
Cursor Crashes on New Agent Bug Reports nightly , chat , performance , crashes	3	158	April 15, 2026
Agent tabs share workbench.editor.limit (25) and ignore Agents → Max Tab Count (5); closed tabs still restore and accumulate Where does the bug appear? Cursor IDE — Agent tabs / editor tabs Bug Reports chat , layout	0	16	September 13, 2026
Multiple unnecessary New Agent tabs in Chat Pane Bug Reports	2	65	July 23, 2026
Bug Report: Cursor Crashes and System Freezes When Opening Agent Window on macOS Bug Reports performance , crashes , agents-window	6	102	July 3, 2026
Cursor Reliably Crashes in Agent Mode whenever Editing File Every Single Time Bug Reports	3	224	November 25, 2025

[BUG] New Agent causes a crash

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