Sending us a screenshot of a bug you're experiencing or any other technical problem can be very helpful for us. Here's how to do it:
iPhone:
Hold down the Side Button and the Volume Up button at the same time. The screen will flash and you'll hear a camera shutter sound (if you have your sound on). The picture is saved and stored in the Photos App on your phone.
For updated information and instructions:
https://support.apple.com/en-us/HT200289
Android:
On Android 9.0 and above, press and hold the Power + Volume down buttons at the same time for a few seconds. The screenshot should be automatically saved in your Gallery.
For updated information and instructions:
https://support.google.com/android/?hl=en (search for your device)