Cura slices not complete STL

Hello,

I am using Cura for some weeks now and very satisfied!
Today I dropped some STL file (yes, 100%manifold) and Cura will not slice some psrts of this object.
It has many small stripes an a large cylinder that is partially supported by the stripes.
Srtipes ar 0.5mm thick, 5mm hieght and 20mm long, cylinder is about 15mmø, everything is unioned as one piece before creating the STL file.
All looks well wen dropped on building platform, but afters slicing all fine stripes are gone…
In Slice3r they stay, in the first week that I used Cura they stayed also present…
Is there a ghost hiding in Cura?

Thanx for your advises…

Try modifying the shell thickness.

Doesn’t change a thing.