This is because your fee pool is empty, so the transaction defaults to paying fees in BTS. If you want fees to be paid in FISTBUMP you need to replenish the fee pool.
Thank you. Is this how it works, the UIA issuer funds this fee pool originally or the fee pool is taken out of the cost of the UIA? And the UIA issuer must replenish the fee pool, which means they pay everyone's fees(?) using the UIA, when the pool is empty or they don't replenish the fee pool and then others pay the fee in BTS on their own. Do I have that right?
Can the GUI possibly show this up front in a future release? It's a bit confusing to see that you're paying fees in the UIA then on the next screen it's swapping to BTS. I did not catch it on two occasions. It also may rub some the wrong way like a bait & switch without some explanation in the GUI for why this is happening. Could some red text under the "Fee 30 BTS" on the confirmation page explaining "
The Fee Pool for this UIA is empty and this Fee must be paid in BTS" be added in a future release?