It was 0605 yesterday:
Now change to 0506:
What happened?
I didn’t realize that I was also using version 05-06.
The solution is to
add the ‘gemini-2.5-pro-preview-06-05’ model in the Cursor settings.
Then, the following message will appear.
‘Model gemini-2.5-pro-preview-06-05 doesn’t have good agent support yet. Start a new thread using Manual mode for better results.’
Therefore, Agent mode does not work, and you must use Manual mode.