Non covered cost basis not reported to IRS - 1099B

This example is particularly to SLV (silver ETF), although it says not reported, but in the 1099B, there is a number in cost basis (col 1e) a shown below.

However, I understand there is a sale to cover the fee.

 

questions:

1. why the broker has a number for me but NOT for the IRS? (non covered)

2. do i need to enter adjustment to cost basis? 

3. if yes, where?

 

 

thanks

 

slv_sale.png