Servers seems to request a file-save on close even for unmodified documents

[rotdrop]

Hi there,

thank you for providing thing app. I have the problem that each time I open a file and close it without modifying anything the server issue a save-request on close (despite the fact that nothing has changed). A related issue is nextcloud/richdocuments#3109. And in my server logs I really find that request to save the file:

... "POST /index.php/apps/richdocuments/wopi/files/18588_ocbnl45ljkp9/contents?access_token=... "COOLWSD HTTP Agent 23.05.2.2" 

Is this behaviour intended or expected? Thank you!