I have implemented WOPI for web and it works perfectly fine in most of the cases. Also all the mandatory test cases are getting passed. But for few specific documents either i get the error
Sorry , this document can not be opened for editing. or sometimes the document opens via WOPI and whenever i edit the document and close it, WOPI does not call the Post endpoint for contents basically to update the file. It directly calls the unlock endpoint so whatever changes i made in file are gone.