Microsoft Forms Bug Hyperlinks Lost When Editing Section Subtitles

Your comparison is useful: duplication and title edits preserve links, while editing the subtitle removes them, and literal URLs remain usable. That points toward a problem in the subtitle editing or saving path, but it does not confirm a particular backend cause. Before changing a live form, duplicate it and reproduce the issue there with one section and one harmless link. Check the saved result after reopening the form and in respondent Preview, not only while the editor still has focus. Compare another supported browser and another editor account if available. For continuity, use the full URL workaround you already verified, or avoid editing a working subtitle until you have a tested replacement. Send Microsoft Forms feedback with the minimal reproduction, affected time, browser versions and before-and-after screenshots. I cannot confirm an official fix or release date, so I would not rebuild the entire form yet.