Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
PluginsArea: what it touches
Internal ChangesKind: in v2.1.251,
Internal ChangesSection of the release
What
The code that registers plugin hooks was rewritten from closures into a class-based registrar. The same errors still fire when a hook or a catch-all handler is registered twice.
Evidence
on("*") registered twice
Strings lifted out of the shipped bundle, so the claim above can be checked against them.