Why is Sort range not working?

Minimal example: https://docs.google.com/spreadsheets/d/168bq72DGKNxNLXt-Jzbh95iQ2Gu93IzmPp38SB0od5E/edit?usp=sharing

inProduction    velocity(%)TRUE    0.027192TRUE    0.026422TRUE    0.246903TRUE    0.03061TRUE    0.02716FALSE   0.001519FALSE   0.000254FALSE   0.001207FALSE   0.000156FALSE   0.000177FALSE   0.000501Z N/A   18.17028428

Clicking

Data -> Sort range -> Advanced range sorting options -> Data has header row + Sort by inProduction Z->A

does not put the Z N/A entry on top

Things checked:

• All data format is set to Text in that column