Describe the bug
When the layer height changes abruptly, the infill layers shifts, sometime ending up over empty air, fail to have any support at all.

To Reproduce
Use the provided model and config, render it. Infill shifts between layers heights 38.31 and 38.96, and then 49.94 and 51.59. And it starts when the layer height changes, then stabilizes.

3D Model and Slic3r Configuration Export
Archive.zip

Expected behavior
The infill layers should stay aligned.

Screenshots

Desktop (please complete the following information):

• OS: MacOS
• Version [e.g. 1.3.0] 916c30c

Additional context
I exported the config using the "stars" infill pattern, and added screenshots with stars and gyroid, the shift happens on all infill patterns.