Will the company be able to file for COS without any problem for a previous H1B holder? I was in NY for a friend's wedding + short holiday but then got trapped due to the coronavirus and unexpectedly received an email to interview at a top tier tech company.
Possibly, as long as your previous employer was subject to the H-1B cap.
https://www.avvo.com/legal-guides/ugc/a-guide-for-temporary-work-visas
For a change of status from B to H the B must have previously been counted in the H1 cap.