We've recently noticed an important issue that may be affecting many developers using the Messenger Platform on iOS. We believe this could be a bug introduced in a recent update:

ISSUE: External links with custom URL schemes (e.g., "app-name://linkdata") are no longer opening from webviews on iOS devices when using Messenger. SCOPE: This affects apps that use custom URL schemes for deep linking, including a common Swedish application we integrate with. TIMELINE: The problem appeared recently, suggesting it might be related to a recent Messenger iOS app update. PLATFORM SPECIFIC: The issue seems to be isolated to iOS. Android devices are functioning normally. IMPACT: This changes long-standing functionality that has worked well for years, potentially affecting numerous apps and users.

We're hoping to gather more information:

Has anyone else noticed this change in behavior? Are there any known workarounds available? Has anyone reported this to Facebook through official channels?

This issue is causing significant inconvenience for our users, and we suspect it might be impacting other developers as well. We're hoping this can be looked into and potentially addressed in an upcoming update.

If you're experiencing similar issues or have any insights, we'd greatly appreciate your input. Your experiences could help in understanding the extent of this problem.

Thank you for your time and any information you can provide.