I have a part that is 1.2mm thin. It should print as 3 lines as in Cura 3.4.1.
In Cura 3.5 it print's as ZigZag. This makes lots of vibrations on the part.
Tried to change the Minimum Wall Flow 0-20% without effect.
Tried with 0 and 100 infill without effect.
In the image the desired result is on the left.