There's 1% of transfer tax on WST. When users Buy, Sell, Deposit, Withdraw, provide or remove LP, 1% of the total amount will be deducted as tax and burned automatically.
There is a possibility that the transfer tax will be changed in the future.
Please set slippage tolerance to at least 1.5% or more to prevent transaction revert. It is recommended to put it to 3% considering price fluctuation.