Before updating to the latest iOS 15.5 as told in your post what was your earlier iOS version. Then you can look into the iOS changes that have happened between the earlier version on your iPhone and this new version that you have updated now.
This will give you a broader idea of the issue if it is directly linked to the iOS version or is triggered by something else.
What iOS 15.5 update has...
iOS 15.5 includes enhancements to Apple Cash, Apple Podcasts, and other features and bug fixes.
iOS 15.5 includes the following improvements and bug fixes:
- Wallet now enables Apple Cash customers to send and request money from their Apple Cash card
- Apple Podcasts includes a new setting to limit episodes stored on your iPhone and automatically delete older ones
- Fixes an issue where home automations, triggered by people arriving or leaving, may fail
- Fixes an issue that may cause iPhone SE (3rd gen) to unexpectedly shutdown
Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:
Apple security updates - Apple Support