You're experiencing odd behavior with a Custom App on your iPad.

 A sysdiagnose is a comprehensive report that contains information about the system state, logs, and diagnostic files from your iPad. You can use a sysdiagnose to troubleshoot issues with a custom app or any other app on your iPad. To gather a sysdiagnose, you need to press and quickly release the volume up button, then press and quickly release the volume down button, then press and hold the top button until the screen flashes. Then you can find the sysdiagnose file in the Settings app under Privacy & Security > Analytics & Improvements > Analytics Data1. References: Apple Device Support Exam Prep Guide, page 10. How to collect a sysdiagnose for iOS, Apple Developer.