No Cost basis for .ZIL

I bought .ZIL on binance.us, and manually transferred it to my imported .ZIL wallet. Under “Performance” there is 0.00 cost basis, even though the total ZIL I own is correct. How will my cost basis be calculated in the future?

Also noticed the same thing with ENJ that I bought…no cost basis under my performance tab, and it also shows 0.00 under my gains or losses. So it tracks the amount I own, but not the performance of either token. Is this a known issue that’s being worked on?