Hi Wilson,
Thank you for your patience.
We have created a simple sample and customized it as in the image attached in your previous update, then we have tried to reproduce the issue in the mentioned environment, but we couldn’t reproduce the reported issue. Please find images below.
Ribbon 1: On Application opening
Ribbon 2: After maximizing and restore
Please find the sample we referred.
Please refer the above sample and let us know if the issue is reproducible on your side, if not please modify the sample based on your customization as it would be helpful to provide the solution at earliest.
If issue is reproducible without any customization, provide the below details.
1. Windows 7 OS version number,
2. Display resolution and scaling of your system.
Please provide the above details and based on your confirmation we can proceed further on this.
Regards,
Nikhilesh O