Merge pull request #237 from Nitrokey/update-fix

always call show on progress-bar on update

nitrokeyapp/progress_box.py

@@ -43,6 +43,7 @@ def hide(self) -> None:
 
     @Slot(int)
     def update(self, n: int, total: int) -> None:
+        self.progress_bar.show()
         value = self.progress_bar.value()
         if n >= total:
             self.progress_bar.setValue(100)