Here is the info on Sec 1250 recapture:
"https://www.investopedia.com/terms/d/depreciationrecapture.asp
Unrecaptured Section 1250 Gain
Depreciation recapture on real estate property is not taxed at the ordinary income rate as long as straight-line depreciation was used over the life of the property. Any accelerated depreciation previously taken is still taxed at the ordinary income tax rate during recapture. However, this is a rare occurence because the IRS has mandated all post-1986 real estate be depreciated using the straight-line method. Part of the gain beyond the original cost basis is taxed as a capital gain and qualifies for the favorable tax rate on long-term gains, but the part that is related to depreciation is taxed at the unrecaptured section 1250 tax rate specific only to gains on real estate property. The unrecaptured section 1250 tax rate is capped at 25% for 2019."
The depreciation taken was straight line. Now do you see the problem?
