After the latest update, the PDF Preview function has broken. The screenshot attached shows the new view I get after the update. I cannot resize the preview window using the corner visual control thingy (that's a technical term). This worked as of 2021-03-27 and upon restarting my machine today 2021-03-28 a new version of Firefox was installed and now this error has occurred. Is there a way to roll back the version until this bug is fixed? Or does anyone have any ideas on how to fix the issue? Things I have tried: Restarting the browser and computer clearing cache and history I have not disabled extensions, but the only extensions I use are Ublock Origin, and a couple other high profile extensions that should work with any progressive update. Thanks, Daniel