Nested modifier reverts property it doesn't modify to object default

[mkbel]

Version

PrusaSlicer-2.1.1+linux64-201912101511.AppImage
PrusaSlicer-2.0.0+linux64-201905201652.AppImage

Operating system type + version

Debian Sid AMD64 with XFCE 4.12.5

3D printer brand / version + firmware version (if known)

unrelated

Behavior

• Nested modifier reverts property it doesn't modify to object default

• Steps needed to reproduce the problem

  • Add big box modifier to part of object
  • Set infill to 100% in that modifier
  • Add smaller box modifier inside big box modifier
  • Set perimeter speed to non-default value

• Expected Results

  • Perimeter print speed is modified in smaller box modifier area (print slows down or speeds up in area)
  • There is no change in infill
    

• Actual Results

  • Perimeter print speed is modified in smaller box modifier area (print slows down or speeds up in area)
  • Infill is reverted to object default inside smaller box modifier
  • Additional perimeters are generated as if object were cut in half on small box borders (I filled separate issue for this problem.)
    

Is this a new feature request?
No, I think it is bug.

Project File (.3MF) where problem occurs

This file is not zipped, just rename it to zebrik_vesak_MK3_laying_modifier_nested_bug.3mf .

zebrik_vesak_MK3_laying_modifier_nested_bug.3mf.zip

[bubnikv]

In PrusaSlicer 2.4.0-alpha1 the modifiers will nest in the order they are listed at the side panel.