I landed in Australia this morning and as soon as my phone updated to Dec 2 on the new network my phone started locking up immediately. It would go to the loading screen (spinner in middle of screen) every 8-12 seconds then reset to lock screen after 4-5 more, making it nearly impossible to even access settings for more than a few seconds. I was able to disable local notifications for the apps that I know use them after 3 or 4 tries (required some quick navigation to get to the right screen before it locked up). I captured the logs on a number of occasions but and saw a few anomalies in the logs including this one:

iPhone kernel[0] <Notice>: 2404.102 memorystatus: killing_highwater_process pid 736 [SpringBoard] (highwater 16) - memorystatus_available_pages: 26834

Possibly SpringBoard consuming too much memory because of the bug?

Additional saw some of these, although not sure if they are a factor:

iPhone dasd(DuetActivitySchedulerDaemon)[107] <Notice>: com.apple.healthd.achievement-asset-manager:E60402:[ {name: NetworkQualityPolicy, policyWeight: 11.400, response: {Decision: Must Not Proceed, Score: 0.00, Rationale: [{[wifiQuality]: Required:100.00, Observed:50.00},{[networkPathAvailability]: Required:1.00, Observed:1.00},]}}