--- a/dialog-1.3-20181107.orig/treeview.c	2018-06-20 03:57:01.000000000 +0000
+++ b/dialog-1.3-20181107/treeview.c	2018-11-24 13:13:41.920241412 +0000
@@ -391,22 +391,20 @@
 	if (key == DLGK_TOGGLE) {
 	    int current = scrollamt + choice;
 	    int next = items[current].state + 1;
-
+	    int current_state = items[current].state;
+            
 	    if (next >= num_states)
 		next = 0;
 
-	    if (flag == FLAG_CHECK) {	/* checklist? */
-		items[current].state = next;
-	    } else {
-		for (i = 0; i < item_no; i++) {
-		    if (i != current) {
-			items[i].state = 0;
-		    }
-		}
-		if (items[current].state) {
-		    items[current].state = next ? next : 1;
-		} else {
-		    items[current].state = 1;
+	    if (flag != FLAG_CHECK) {	/* checklist? */
+		for (i = current + 1; i <= item_no; i++) {
+		   if (depths[i] > depths[current]) {
+			items[i].state = current_state == 1 ? 0 : 1;
+			items[current].state = next;
+		   } else {
+			items[current].state = next;
+			break;
+		   }
 		}
 	    }
 	    print_list(&all, choice, scrollamt, max_choice);