GPT-5.5 consistently fails to follow instructions when used in Custom GPTs and Projects.
This happens at the very beginning of every new conversation, not randomly. I already checked that the instructions are not contradictory.
Expected behavior:
GPT-5.5 should follow Custom GPT instructions and Project custom instructions from the first response.
Actual behavior:
The first response already ignores or deviates from those instructions.
Affected areas:
- Custom GPTs
- Projects
- GPT-5.5
- New conversations
Please investigate whether GPT-5.5 is correctly loading and applying Custom GPT / Project instructions when a new chat starts.