App sets screen brightness permanently

For the most part, the app seems to work fine when redeeming offers. On a couple occasions it did not work but they made adjustments to my total at the restaurant. My main complaint is after using the app, which makes the screen brighter so it can easily be scanned, when you are done using it, the screen stays full bright and will not go back to its original settings. Mine is set as auto brightness but after using the app, it stays full brightness and I have to go into settings to correct it every time. That is such a pain :(

PKtheDJ about McDonald's, v5.2.2