I don't understand the cumulative TTWROR?

This screenshot confuses me :

I exported the THALES performance chart, redid the calculations, and it’s fine. Tonight, I lost €17.02, the IRR is -3.63%, and yet the TTWROR is +1.90%… This defies my logic. How can you lose money on an asset and still have a positive rate of return?
It’s counterintuitive!