Does ChatGPT has a limitation to forgot an old Chat or new Chat that has been for a months or just a days?

Hi, Everyone, I hope you all have a great day.

I have something might be really weird happen when continuing chat that I have been left for an hour or even wanting to continuing an old chat that 1 months ago somehow the chat can be different than our main topics and can’t continue with our main topics. For some reason, I try other chat and magically it can and remembering about our context.

Does anybody has similar issues that I have? Any advice or anything to explain my issues?.

Thanks!