[5.8] 3D Widget Interaction fails on iOS devices (Works in Editor and UE 5.7)

General Issues and Bug Reporting (Unreal Engine)
1

Summary

In Unreal Engine 5.8, interacting with 3D Widgets using the WidgetInteractionComponent works perfectly in the Editor, but fails to register any input when packaged and tested on an iOS device. This issue did not exist in UE 5.7. Get 2D Hit Location consistently returns (0,0) on mobile.

What Type of Bug are you experiencing?

Platform Mobile

Steps to Reproduce

  1. Create an Actor with a Widget Component (3D UI) and place it in the level.
  2. Set up a WidgetInteractionComponent on the Player Controller/Character to handle Touch inputs (triggering Press Pointer Key).
  3. Package the project for iOS and launch it on a physical device.
  4. Tap on the screen to interact with the 3D widget.

Expected Result

The 3D widget successfully registers the touch interaction and fires UI events, exactly as it does in the Editor and in previous Unreal Engine 5.7 iOS builds.

Observed Result

The interaction is completely ignored on the iOS device. If debugged, Get 2D Hit Location consistently returns (0,0) during the interaction attempt on mobile.

Affects Versions

5.8

Platform(s)

iOS