small fix

src/nodesnim/nodescontrol/button.nim

@@ -71,6 +71,7 @@ method draw*(self: ButtonRef, w, h: GLfloat) =
       else:
         self.normal_background
 
+  self.text.rendered = false
   procCall self.LabelRef.draw(w, h)
 
 method duplicate*(self: ButtonRef, obj: var ButtonObj): ButtonRef {.base.} =

src/nodesnim/nodescontrol/tooltip.nim

@@ -46,6 +46,7 @@ proc ToolTip*(name: string = "ToolTip",
 
 method postdraw*(self: ToolTipRef, w, h: GLfloat) =
   {.warning[LockLevel]: off.}
+  self.text.rendered = false
   procCall self.LabelRef.draw(w, h)
 
 method showAt*(self: ToolTipRef, x, y: float) {.base.} =