Event handlers with .once only get the first parameter

[foundryspatial-duncan]

Version

2.6.11

Reproduction link

https://codepen.io/foundryspatial-duncan/pen/VwjmNqY?editors=1010

Steps to reproduce

Any component event that emits more than one parameter, like $emit('play', 'foo', 'bar', 'baz') will only pass the first parameter ("foo") to the handler if you use the .once modifier.

What is expected?

All parameters get passed to the event handler. Same behavior as normal v-on, but it only happens once.

What is actually happening?

Only the first parameter gets passed, and the others are dropped.

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Looks related to #10867 (which says it's any modifier and not just .once) but that one's from last year, and it's merged & closed... I'm still seeing it in the latest 2.6.11 & 2.6.12

[posva]

It hasn't been released yet