Z Suite bug with letters

I'm trying to print a part with words engraved in it but for some reason zsuite ignores every word when I turn the part upside down. Can somebody test it?

Hi Revitorio,

Thanks for the file. Try with 0.29mm - it seems to work fine then.

Hi Marek

Thanks for the reply. Tested with 0.29 and yes it works fine. Thanks again.