Question about errors in the models gemini-2.5-pro

Overall, over the last three days I have made about 100 requests to the Gemini 2.5 Pro model, but in the end I saved NOTHING.
It refuses to edit, constantly makes changes and immediately says it saved incorrectly, then just gives part of the code in the chat.
I don’t like Sonnet 4.0, it makes a lot of changes I didn’t ask for.
It always ignores my prompts and doesn’t get the job done on the first try.

In general, something strange is happening.
And the most important question: why did you use the older model gemini-2.5-pro-preview-05-06 in Cursor instead of the latest 06-05?
This model only started appearing in the history on the 24–25th… Very strange.