Yeah, hoping this is a bug and not intended otherwise this is so stupid…
considering they just turned it back on its def intended
Very bad change, if the reasoning is to limit purchases of keys or map acquisition, find another way. This currency is used for other things as well and it really doesn’t make sense.
Just checked, theres like 50k worth of stuff for undercoins 
agreed idk why they ruin fun
Great, so we have to farm the delves on one character to consolidate the coins to one character.
Huh. Well, thanks for sharing this news/update. I don’t play alts but it would be grand to know why the change occurred.
FUN DETECTED
I think that Wave Scrambler should just be a drop from curiosities and chests. Make it Warbound and remove it from the Undercoin vendor. Then give us back the ability to transfer Undercoin.
What’s crazy is back in S1 the three keys were on a weekly lockout per account. Dunno if the scrambler is the same but it should as well.
By the time you gotten the ability to buy keys on your main it was irrelevant.
They do make it easier to not bother with alts in an “alt friendly expansion”. Frees up a lot of time for other games.
whats more alt friendly than not needing to play alts?
Not sure I get why myself. I usually gear a few alts end of seasonish to pvp. If I like them I pvp and do delves.
I guess the idea is you have to do more on one toon to get schematics?
this is a terrible change please revert…whatever you think is too op just remove from coins
Sigh. Now I need to research how to get those stupid coins. I was just transferring the ones all my alts got from leveling in delves last season.
Okay, when I had read this the other day I was a bit confused because I thought you were suggesting that the item should be a new drop in these. But I did a Spiral Weave run today, had looted one from a curiosities on my Rogue, I didn’t even think that was possible.
Now I see why you suggested that. 
it’s to limit purchases of the wave scramblers to get guaranteed maps…they’re going to turn it back on after rwf
wouldnt hold my breath on that, this is blizzard when FUN is detected its nerfed and removed
Cant transfer under coins. Dumbest thing ever