Cursor Freeze Bug

Hey, thanks for the report. This looks like a known bug. We’re tracking it here: Cursor freezes on final “Review Changes” step in Agent Mode

We need to confirm details and collect diagnostics:

  • Does the pattern match: it freezes if the Agent finishes while the Cursor window is not focused
  • Request ID of the frozen chat: chat menu (top-right) > Copy Request ID
  • Console screenshot: Help > Toggle Developer Tools > Console at the moment of the freeze
  • MCP: Settings > search “MCP” - which servers are enabled. Try disabling all MCPs temporarily and restart
  • Extensions: launch with cursor --disable-extensions and check
  • Process Explorer: CTRL+Shift+P > Developer: Open Process Explorer - which process is spiking
  • Update to the latest version and check if the bug still reproduces

As a temporary workaround, try keeping the Cursor window focused when the Agent finishes a step. Let me know if this helps and please share the data above.