Hi,
When I'm setting labels as arguments and the first argument is an array:

someCounter.labels(arr, string1, string2)

it is considered as an object and throws Added label "0" is not included in initial labelset.
I found that there is a condition if (typeof args[0] === 'object') but it might also check that it is not an array.

I've upgraded from v12 to v14 (but it happens in v13 also).

Thanks