954dbedc57
External render engines, like Cycles, do not use the paint BVH for rendering. As part of the stroke update process, normal caches are tagged as dirty. These normals need to be recalculated to be valid on the next stroke step. This commit is a mitigation for the reported issue, but does not fully fix the underlying issue that causes the cycles data to be in this state. Pull Request: https://projects.blender.org/blender/blender/pulls/140503