Hi Mozilla Support Team,I am reporting a frustrating issue that started occurring about two weeks ago in Firefox on Windows 11. When copying blocks of text from modern chat interfaces (which typically use Markdown or dynamic text rendering), Firefox is stripping away all line breaks.The Issue:When I select text with the mouse and paste it into applications such as Facebook, Hotmail (Outlook), or Notepad, the content appears as a single, continuous block of text with no paragraphs or spacing. This issue seems specific to Firefox, as the same action in Chrome or Edge preserves the original structure perfectly.Example of the error:Original text:Line 1Line 2Result after pasting from Firefox:Line 1Line 2Troubleshooting steps already taken (with no success):Toggled layout.word_select.eat_space_to_next_word to false.Toggled editor.use_div_for_default_newlines to true.Tested in "Troubleshoot Mode" (Safe Mode) with all extensions disabled, but the problem persists.It appears to be a regression in how Firefox handles white-space or block elements during clipboard operations. This is significantly affecting my daily workflow. Are there any known fixes or upcoming patches to address this?Thank you, Vasco Lemos Barreto