"browser.download.improvements_to_download_panel" was a temporary preference while bugs were worked out. You can set that back to true and... As you noticed, Firefox 98 changed from saving downloads in the Windows Temp folder for "Open with [relevant application]" or "Use [relevant application]" to saving them in your default downloads folder (the one next to "Save files to" on the Settings page). It's not possible to pass a file to an application without saving it somewhere. Firefox 102 added a hidden setting to roll back that change. Here's how you access it: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button accepting the risk. ''More info on about:config:'' [[Configuration Editor for Firefox]]. ''The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.'' (2) In the search box in the page, type or paste '''browser.download.start_downloads_in_tmp_dir''' and pause while the list is filtered (3) Double-click the preference to switch the value from false to true