As of 3/5/19, TT did not correctly populate the QBI deduction from our K-1 on either the desktop or online version of TT Home and Business. After MANY hours on the phone with support, they were able to share my return online (from the desktop version only) and give me the override to force TT to enter the proper deduction. It took several tiers of support to get to that point, but they did not give up! (side point- the first time I entered my K-1, TT did calculate the QBI. Then, in an attempt to correct a state error I deleted and re-entered the K-1. TT lost the QBI despite identical entries)
