Hi @siaeleni -
Is it related to the change from LPS to RAS? If not, then it could be related to the version of VTK. If so the best thing might be to create a short python script to reproduce the issue with sample data to post on the VTK github.
Regarding the release, it’ll be called Slicer5, and it’s being tracked here:
https://www.slicer.org/wiki/Documentation/Labs/Slicer5-roadmap
It’s a major effort that doesn’t currently have dedicated funding so people are doing it as a kind of side project with no firm release date. Hopefully soon.