Action "Split tag field" does not work any longer

[Cryptographer]

@ohrenkino

I doubt that that what you described (supplying a list of characters) ever worked.
I think that nothing has changed with this function.

I've downgraded to version v3.30.
Now the old behavior is restored, and a separator list like "COMPOSER":";,/&" works perfectly.

I assume this was introduced with #68782.