Cursor stopped suggesting file/function so ide can't paste

Just adding for reference, I did a search for ‘Apply not working’ and here are some of the results - no definitive solutions I could find, but this sort of behaviour does seem to be resolved over time and with new releases etc:

Perhaps when you get back to your desktop, you could share a screenshot of the undesired behaviour (with any private info redacted ofcourse).

Oh and also copy/paste system info from:

Cursor > Help > About