Fixed issue hlorus#426

This might be a patch for the problem, but it works

operators/add_workplane.py

@@ -137,6 +137,7 @@ def main(self, context: Context):
 
         self.target = sse.add_workplane(origin, nm)
         ignore_hover(self.target)
+        [a.tag_redraw() for a in bpy.context.screen.areas] # Force re-draw of UI (Blender doesn't update after tool usage)
         return True