I'm on FF Beta v105.0b6, and a recent upgrade (I'm guessing from 104 to 105) has caused popup windows to be ghosted when saving files, leaving only the file selector field visible and floating above the main window, often indistinguishable from the text below it. I've been able to work around this by temporarily jumping to another screen or window and then back to find the complete popup window magically revealed. I've attached two clips from windows a see after clicking Download link on the https://www.mozilla.org/en-US/firefox/new/ page. This ghost behavior also happens on pages where I right-click context to "save as" or click download link for TXT, PDF, PKG or other types of files. This doesn't seem to be a popup blocking issue, since my FF is not configured to block these specific sites and the popup is minimally visible. Also, the temporary workaround of simply switching my view away and back points more to a page rendering issue. I'd appreciate any ideas on resolving or preventing this behavior. If these clues point to a bug, I hope they help resolve the issue. Thanks for any suggestions!