Yes, it has been noted many times within the forum. A member mentioned in another chat yesterday to provide context to Google. Therefore I wrote a bug report with the aid of the current 2.5 pro model.
For me personally 10-11/06 the Google Drive errors commenced with 0506, I started the current project on May 30 and had 0 issues prior. I joined the forum confirmed others were experiencing the same, then discovered the model’s scheduled deprecation for 19/06. I hypothesised this was a consequence of either token count or the upcoming degradation. I then commenced working with the current model in tandem with 0506 until the 19/06. With the current version new errors were present from the outset, then on the 19/06 I noticed significant changes which I have outlined in the bug report.
No answers as yet. Hope my feedback helps.