Fix bug with pruning stale nodes

engine/breeze/ui/ui.c

@@ -116,6 +116,8 @@ BzUI *bzUICreate() {
     ui->borderStyles     = bzArrayCreate(BzUIBorderStyle, 10);
     ui->spriteStyles     = bzArrayCreate(BzUISpriteStyle, 10);
 
+    ui->currFrame = 0;
+
     // 10kb should be enough
     ui->strArena = bzStackAllocCreate(10240);
 
@@ -165,7 +167,6 @@ void bzUIBegin(BzUI *ui, i32 width, i32 height) {
 
     bzStackAllocReset(&ui->strArena);
 
-    ui->currFrame++;
     ui->root->lastFrame = ui->currFrame;
     ui->keyIdCount = 1;
 }
@@ -349,7 +350,7 @@ static void pruneStale(BzUI *ui, BzUINode *node) {
     BzUINode *last = NULL;
 
     while (child != NULL) {
-        if (child->lastFrame != node->lastFrame) {
+        if (child->lastFrame != ui->currFrame) {
             BzUINode *next = child->next;
             if (child->prev)
                 child->prev->next = next;
@@ -479,6 +480,8 @@ void bzUIEnd(BzUI *ui) {
     calculatePositions(ui, ui->root, 0, 0);
     updateNodeInteraction(ui, ui->root, GetMousePosition());
     renderNode(ui, ui->root);
+
+    ui->currFrame++;
 }
 
 BzUIKey bzUIGetUniqueKey(BzUI *ui) {