Created attachment 157227 [details] Screenshot of page with pasted images and <!--Fragment-->s LOOLWSD 4.0.4 (git hash: 305832f) LOKit Collabora Office 6.0-29 (git hash: 5a695a1) Browser: Firefox 71.0 OS: Windows 8.1 If I copy and paste an image from a webpage directly into an .odt document (into a table but also in the document body) it hangs for about a minute, and then when the image appears editing is either really slow or hangs. Sometimes after a while it lets me type but the cursor has gone so you can't see where you're typing. It also puts <!--StartFragment--> and <!--EndFragment --> in the margin which I can't remove unless I refresh the page. Then after reloading it doesn't even render the document for the next few attempts (just get a blank screen) until finally I can edit the document but the cursor disappears as soon as I try to edit content after the pasted images. Once I delete the images and the <!--Fragment-->s it seems to go back to normal
I don't see this issue in a recent Collabora Online 6.4 or 4.2 version, please check with one of those, and if you can still reproduce the bug, open a ticket here: https://github.com/CollaboraOnline/online/issues