Firefox bug 1615852 (padding-br contenteditable workaround) is marked RESOLVED FIXED in Firefox 135/145. Before merging fix-crlf, the without-extension regression canary must reproduce the LinkedIn composer bug on current stable Firefox. If the canary cannot reproduce, the module retires instead of shipping.
Context: research/2026-04-complaints.md verification gate.
Firefox bug 1615852 (padding-br contenteditable workaround) is marked RESOLVED FIXED in Firefox 135/145. Before merging fix-crlf, the without-extension regression canary must reproduce the LinkedIn composer bug on current stable Firefox. If the canary cannot reproduce, the module retires instead of shipping.
Context: research/2026-04-complaints.md verification gate.