pda-client bug fix

src/Scope.ts

@@ -227,7 +227,7 @@ export class Scope {
             }
         }
         Ext.Viewport.add(that._handle)
-        if ((window as any).mainWindow === that) {
+        if ((window as any).mainWindow === that || (window as any).loginWindow === that) {
             Scope.SHOW_PAGE_STACK.length = 0
         }
         that._handle.setStyle({'z-index': 1})