@Grimy Yeah, I've been wondering that myself. I think it's a bug tbh. In the legacy version of 05AB1E it works fine and ZWàß all work on non-numbers

@Adnan Could .γ be changed to an actual group by? We now need an additional sort before it in order to correctly group by. Also, something like this says enough.. Those 12 bytes (ε...y‚}{.γн}εεθ) should have been just 2.. .γ