Doubt regarding margin used and margin available being displayed

Hello,

I bought Liquidcase ETF (Delivery+Limit order) at 6500 x 101.41 = ₹659165. So the margin used should be ₹659165 in this above scenario. But under “Margin Used” tab it’s showing ₹659185 (₹20 rs more than the actual used margin) as well as money “Available for Investing” is also showing ₹20 less that what should be actually available.

Is the “Margin Used” includes any charges (that would be deducted usually the next day i.e SGST, CGST, Stamp duty and DP charges and such) or is it any bug with the display on front page of some sorts?