Unreal Engine Issues

Crash when reopening a project that has a Child Actor component in a BP with a WaterBody class set as the Parent Class

When adding a child actor component to a Blueprint with the Parent Class set to one of the new Water classes and then placing it in the world, the project will crash on open. This was tested with th ...

Spatialization no longer occurs when Non-Spatialized Radius is set above 0

Audio spatialization no longer occurs when Non-Spatialized Radius is set above 0 in a sound actor (instance or in a sound cue). I could not reproduce this issue in UE4/Main. ...

Record with timecode as source but false on start at Timecode causes crash

Input Events don't have friendly names in Call Stack tab

In the Call Stack tab, input events are not listed by their friendly names. Instead they have long names such as InpActEvt_One_K2Node_InputKeyEvent_2. This is different from Actor Events that simp ...

Previewing Node in Material Editor Produces Unexpected Output with DX12

Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...

DoesSocketExist always returns false for Sprite Sockets (flipbooks and sprite components)

DoesSocketExist always returns false for Sprites in a Flipbook, whether there is a socket on any/all of the Sprites or not. Note: GetSocketLocation seems to work fine, indicating that it is reading ...

Exponential Height Fog renders incorrectly after Set World Origin Location

When having an Exponential Height Fog actor far away from origin, after doing Set World Origin Location, Exponential Height Fog's appearance changes. ...

Fix pause flags when recycling sound sources

Issue is due to pause flags getting recycled when new sound sources are used from the sound source pool. This is a regression since 4.13, causing audio to pop. ...

FBX & OBJ Files no longer Import with their UVs Depending on Software Used

Importing an OBJ file no longer imports the UVs. Test asset included for OBJ and FBX version of the same file. Added Test FBX from SketchUp Tested with: 4.12.5 CL-3039270 - Working 4.13.0 CL-31 ...

Tessellation not working properly on Vulkan

When a user launches content examples with -vulkan tessellation will not be working. Everything tessellated will appear as if it has no tessellation. This issue is also occurring in 4.18 ...