Code at the XR actionmap level is using calloc/free, but later when conditions trigger WM_operator_properties_alloc in `windowmanager\intern\wm_operators.cc` it is using MEM_new, which is the mismatch. XR actionmap code needed to be modified to be compatible with the allocators it is using. Pull Request: https://projects.blender.org/blender/blender/pulls/133274