Unreal Engine Issues

Mobile Previewer: Safe Zone Invalid Until Window Resize

When the Mobile Previewer loads, the Safe Zone widget is not working properly at startup, and requires a window resize to update to the correct Safe Zone. ...

Editor not properly handling frame ranges for 60fps animations

The editor does not seem to be handling frame ranges properly for 60fps animations. Say you have a 200 frame animation that spans frame 0-200. Upon import it will be 201 frames. If you set the ra ...

Using dynamic bindings in a code class will result in the bindings becoming a permanent part of any Blueprint created from that class if a hot reload is performed.

If dynamic bindings are being used in a custom code class from which Blueprints are derived, any hot reload will make the bindings a permanent part of the Blueprint and they cannot be removed or cha ...

IOS crash disabling idle timer when closing the app

Licensee report of crash during shutdown due to setting [UIApplication sharedApplication].idleTimerDisabledbeing from the Game thread. Grouped together with others items in [Link Removed] ...

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

Custom UVs don't store information properly in layered materials.

[Link Removed] I have this set up so that FX artists can stack UV manipulations, so I don't want to just have all the UV manipulation in the layer with the base color, even though that does give me ...

Assign node on floats can cause a crash at runtime

This is from a UDN and I was not able to reproduce it locally in Release-5.0 or Ue5/Main, creating this issue for tracking.  ...

Crash occurs in PIE when an Actor calls a method in a UObject that attempts to modify an FString member of the UObject

The Editor will crash in PIE when an Actor calls a method in a UObject that modifies some FString members in the UObject. In the Attached project, the UObject class contains two FString members and ...

Crash on loading level with Landscape by 2 PIE instances

Struct with a single unaltered element will remove the element from the struct on compile

If used inside a UMG Blueprint, a struct that has only one element will remove the element from the struct after compiling the blueprint. If the element is edited or a second element is added then ...