Unreal Engine Issues

Delay node after a Destroy node breaks blueprint string

When a delay node is placed after a Destroy node in a blueprint string, nothing after the delay node will trigger. Removing the delay will trigger following nodes. ...

Use mouse for touch enables gesture action on button which makes the button to lost focus to that the button fires onreleased event

When Use mouse for touch is enabled, the button fires onreleased event. Here is what I investigated. Use mouse for touch enables gesture action in the button that leads to LongPress gesture fires ...

Hierarchy is lost when components are copied from one blueprint to another

If a user has a list of components with a hierarchy, the hierarchy is lost in the target location if they copy the components to another blueprint. ...

World Origin Shifting Rendering Desync On Play

Splines handle box collision and collision from other shapes differently

Splines handle box collision and collision from other shapes differently. ...

Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)

A crash occurs when switching back and forth between levels when using seamless travel. This happens if a multicast was called and if it contains a member variable. ...

When multiple HLODs are set, the transition does not occur correctly

The [bIsVisible] flag is set to [1] by the following judgment.const bool bIsInDrawRange = DistanceSquared >= Bounds.MinDrawDistanceSq * HLODState.FOVDistanceScaleSq; Judging from this code, I bel ...

DoF Focal Distance and Region not respected in Mobile/Metal Preview or Deployment

When using a DoF setting and in Mobile Preview/Metal or launching on a iOS device which supports Metal, the DoF Focal Distance and Regions are ignored and the whole scene has DoF applied to it. ...

Null access to Unpossessed controller with seamless travel

The unpossessd controller will not be removed from UWorld::ControllerList unless destroyed. This causes null access to the ControllerList when GC occurs during seamless travel execution. The unposse ...

Play Dynamic Force Feedback does not work on Android

When trying to trigger vibration through the Play Dynamic Force Feedback node, nothing happens on Android. I tested this on Windows as well with an Xbox Series X controller connected, and the vibrat ...