Fix (unreported): Walk expansion on scene collection

Left walk navigation while the scene collection is active would collapse
the subtree which shouldn't be allowed. This adds another check to
`outliner_item_openclose` to prevent collapsing the scene collection.

Introduced in rBb077de086e14.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/editors/space_outliner/outliner_edit.c b/source/blender/editors/space_outliner/outliner_edit.c
index 498d26add48..ad7346a5651 100644
--- a/source/blender/editors/space_outliner/outliner_edit.c
+++ b/source/blender/editors/space_outliner/outliner_edit.c
@@ -161,7 +161,12 @@ void outliner_item_openclose(SpaceOutliner *space_outliner,
     return;
   }
 
+  /* Don't allow collapsing the scene collection. */
   TreeStoreElem *tselem = TREESTORE(te);
+  if (tselem->type == TSE_VIEW_COLLECTION_BASE) {
+    return;
+  }
+
   if (open) {
     tselem->flag &= ~TSE_CLOSED;
   }