diff --git a/BUGS.md b/BUGS.md
index 9f94ebf..0c30e8e 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -601,3 +601,10 @@ input, and a read-only token refused by all of them. The public demo page and in
 Top tab on all four machines — including `grid`'s sixteen cores and thirteen filesystems, which
 scroll inside their boxes — its rate control, its filter, and three skins repainting it.
 `hamtv`'s eMMC really is called `hB8aP>`; that is what the device reports.
+
+Firefox earns its place in this: three of the six above were invisible in Chromium, which
+swallows a failed WebSocket where Firefox writes it to the console. One thing it reports is
+*not* a fault — a page torn down by navigation while a terminal's socket is still shaking
+hands logs "can't establish a connection". Sitting still on a page produces none, the address
+is right, and the terminal belongs to the machine asked; `sockets.cjs` checks that ownership
+rather than the noise.