diff --git a/editor/editor_inspector.cpp b/editor/editor_inspector.cpp
index 6dc38635be0..715d0ca34e2 100644
--- a/editor/editor_inspector.cpp
+++ b/editor/editor_inspector.cpp
@@ -2791,7 +2791,9 @@ void EditorInspector::update_tree() {
 						(!filter.is_empty() || !restrict_to_basic || (N->get().usage & PROPERTY_USAGE_EDITOR_BASIC_SETTING))) {
 					break;
 				}
-				if (N->get().usage & PROPERTY_USAGE_CATEGORY) {
+				// Treat custom categories as second-level ones. Do not skip a normal category if it is followed by a custom one.
+				// Skip in the other 3 cases (normal -> normal, custom -> custom, custom -> normal).
+				if ((N->get().usage & PROPERTY_USAGE_CATEGORY) && (p.hint_string.is_empty() || !N->get().hint_string.is_empty())) {
 					valid = false;
 					break;
 				}