Describe the Bug
I got connection failed using Claude 4 Sonnet in agent mode while other models work perfect and no connection failure appears. Everything is ok in network diagnostics tool too.
Steps to Reproduce
Use Claude 4 sonnet model agent mode and sent any prompt. it cannot completed and connection failure appears on screen
Screenshots / Screen Recordings
Operating System
MacOS 15.5
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.1.5 (Universal)
VSCode Version: 1.96.2
Does this stop you from using Cursor
No - Cursor works, but with this issue
