I am not able to check back my solutions

Once I submit my solution for a chalenge/project and move to the next one. Next time if I am trying to go back to the previous challenge that I had solved I am not able to see my solution.

Yes, I agree with you.

I think it’s a bug in FCC.

Either you’re clearing your browser’s storage, an application is clearing your browser’s storage, or something is preventing FCC from writing to your browser’s storage. Make sure that your browser is up to date and be aware that Safari and Edge do not support all of the features in the new FCC application.