THE fee of selling orders was also xusd?

Stacks address:SP3R5XM4DWX30N7J44E3ARMNTBH0KPNX3T27HA8X2
Descriptions:THE fee of selling orders was also xusd? NOT XBTC?
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Discord ID: centerplcapek#1207
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We have noticed this issue, when you place the sell order, it should take xBTC as the fee.