Jacques Lucke
6f1cdcba85
It looked up the vertex group index based on the object instead of the actual mesh that is currently used. Since geometry nodes, the number and order of attributes can change in arbitrary ways during evaluation. Therefore, this index has to be looked up on the mesh which contains the most up-to-date information. There are probably similar issues in other modifiers. That has to be fixed step by step. Ideally by using the attribute api directly eventually.