Not broken with strict ETP in Waterfox on FreeBSD-CURRENT.
Broken with strict ETP in Librewolf, and the strictness can not be reduced to standard.
grahamperrin@mowa219-gjp4-zbook-freebsd ~> pkg iinfo www/firefox www/librewolf www/waterfox
firefox-137.0_1,2
librewolf-136.0.4
waterfox-6.5.6,1
grahamperrin@mowa219-gjp4-zbook-freebsd ~> uname -mvKU
FreeBSD 15.0-CURRENT main-n277013-152e61976155 GENERIC-NODEBUG amd64 1500040 1500040
grahamperrin@mowa219-gjp4-zbook-freebsd ~>