Bug write-up: the Source code editor opened behind the modal (#101) TinyMCE appends its dialogs to the end of <body> in a sink of its own at z-index 1300; our shared .modal is 2000. So any rich-text editor inside a pop-up had every dialog it can open trapped behind it - Source code, but also Insert link, Insert table and Special character, on both editors on the Tickets settings page. The page credits mbsouth's diagnosis, which was right, and explains the one detail that was not: the "z-index: 1" they read in the inspector is .tox-dialog-wrap__backdrop, genuinely 1 relative to its own parent. The number that decided the outcome was the sink's 1300 further up the tree. Also records the two things the live run corrected after I had read them straight out of the CSS and got them wrong, and why the assertion is elementFromPoint rather than a computed z-index. Adds the Bugs-Resolved row.