Thank you for your report, we have been able to reproduce and confirm the issue. iOS 17 and 16 seems affected.
Its been reported and sent to the dev team.
Please note, that short term you can upgrade to iOS 18, which I would recommend regardless of this issue. Because you will benefit from security improvements and general improvements in the system, without any performance or battery degradation.
iOS26 is more power hungry and is still a bit immature, and there are major changes to interface and design that you may be sceptical about. But I would say iOS18 is a safe bet.