For those of you who want to test the update, follow these steps. Note, you must be running iOS 16 or higher.
1. Install the TestFlight App on your device.
2. Enter testflight.apple.com/join/W6Sd434a (must be a capital W and capital S) into your device's browser.
3. Tap 'Accept' to join the beta program.
4. Tap 'Install' to download version 12.5.4 Build 318.
You must be able to mimic the conditions of the issue for this test to be effective.
Report your findings here.
Note, this is a beta test version. You will need to install the actual production version from the App Store when it is published.