1 files changed, 4 insertions, 0 deletions
diff --git a/source/blender/nodes/intern/node_common.c b/source/blender/nodes/intern/node_common.c
index 36b9098d972..0b1ab85c059 100644
--- a/source/blender/nodes/intern/node_common.c
+++ b/source/blender/nodes/intern/node_common.c
@@ -188,6 +188,10 @@ void node_group_update(struct bNodeTree *ntree, struct bNode *node)
   if (node->id == NULL) {
     nodeRemoveAllSockets(ntree, node);
   }
+  else if ((ID_IS_LINKED(node->id) && (node->id->tag & LIB_TAG_MISSING))) {
+    /* Missing datablock, leave sockets unchanged so that when it comes back
+     * the links remain valid. */
+  }
   else {
     bNodeTree *ngroup = (bNodeTree *)node->id;
     group_verify_socket_list(ntree, node, &ngroup->inputs, &node->inputs, SOCK_IN);