VTHO Staking Cost Basis Changing Each Day

VTHO Staking Cost Basis Changing Each Day

I have noticed that after manually entering my VTHO Staking Rewards from Binance.US in my VTHO Binance.US Wallet, that each day, the Cost Basis changes.

Expected Result: Cost Basis should be the value of the VTHO when received, and will not change with the price of VTHO.

Here is an Example:
On 9/16/2021 at 8:02 PM the Cost Basis for VTHO entered on 09/15/2021 is displayed as $10.58. See yellow highlight on below screenshot:

Then On 9/17/2021 at 1:38 PM the Cost Basis for VTHO entered on 09/15/2021 is displayed as $10.05. See yellow highlight on below screenshot:

Thank you for taking a look at this issue