Attachment #475047
Video demonstrating the bug.	video/quicktime	2025-04-25 07:49:43 PDT	3.37 MB	no flags	Details

Attachment cannot be viewed because its MIME type is not text/*, image/*, or application/vnd.mozilla.*. Download the attachment instead.

Attachment #475048
test case	text/html	2025-04-25 08:53:31 PDT	196 bytes	no flags	Details

<!DOCTYPE html> <html> <head></head> <body> <input type="text" /> <div style="height: 2000px;"></div> <iframe srcdoc="<div contenteditable=true></div>"></iframe> </body> </html>