My repair & improvements exceed $10,000, but TurboTax still applies Safe Harbor Election for Small Taxpayer?

I entered 4 assets for my rental property into TT as follow:

1. Appliance $4,200 - TT fully deducts this using Section 179.

2. New roof $15,000 - TT depreciates this normally.

3. House - TT depreciates this normally.

4. Fence replacement $4,000 - TT fully deducts this using Special Depreciation Allowance.

 

In the end, TT includes "Safe Harbor Election for Small Taxpayer" form in my return. Given that my total improvements exceed the 2%/$10K limit, shouldn't TT have prevented me from electing SHEST? Is this a bug?