I am seeing a similar bug. I enter in the adjusted cost basis during the interview questions but the adjusted cost basis does not make it through to the 1099 form. I did create a separate manual entry on the 'Capital Gain (loss) Adjustments worksheet and this worked for two separate stock sales. Problem is, when I saved the file and reopened it the next day one of the manual entries was gone! Looks like I need to wait for Turbo tax to fix this. Also, I'm no longer seeing the link to 'Turbo Tax chat help' - can someone please point me to this link? My only option was to call a phone number and wait 45 minutes..
