You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
HooksArea: what it touches
New FeaturesKind: in v2.1.251,
New FeaturesSection of the release
What
Hooks that plugins attach to interface calls now run through a shared chain runner that checks the event argument is an object first. When it is not, the error names the hooks involved instead of failing opaquely.
Evidence
its input is no object, which the hooks on it
Strings lifted out of the shipped bundle, so the claim above can be checked against them.