Unreal Engine Issues

Constraining aspect ratio of cine camera with post process material attached causes rendering issue

Applying a PP material that uses absolute world position to a cine camera using "constrain aspect ratio" causes rendering issue. Note: Changing the film back settings on the camera also results in ...

When using a SpeedTree asset, a Zero Triangles warning appears

When exporting from SpeedTree with LODs + billboard, It seems that a warning is issued by including a material used only by Billboard. Is there a way to deal with it? ...

PrecomputedAOMask cannot be used when Virtual Texture is enabled

The problem is that when the VirtualTexture lightmap is enabled, the value returned by the material node's PrecomputedAOMask is incorrect. ...

Crash When Playing After Setting Size of Retainer Box to Minus

Retainer box has minus size occurs crash when PIE, standalone and package.  Probably, we should add any codes for adjust size to 0 or more to  URetainerBox::SynchronizeProperties(). ...

OBJ import - Auto Triangulation - Error: No polygon were found on mesh ''

"When translating some geographic data into a .OBJ, and importing into UE4. More than 165 of the meshes work. Some, i am having a hard time with. I've attached an example. AUT-mesh.obj is one of the ...

Virtual Production Template - Blank Template under Film, Television, and Live Events has AJA/BlackMagic plugins enabled by default on unsupported platform

Screen Aligned(Velocity) particles deform at low velocity

Screen aligned particles with very low velocity will squash in 4.23+ (No squashing in 4.22) Confirmed in 4.25 MAIN at CL 10333042 ...

Vulkan leaks memory when opening and closing windows

As described here: https://udn.unrealengine.com/questions/532725/index.html (1) Start Prebuilt Vanilla 4.23.1. with Vulkan enabled (2) Create a new project (3) Drag and drop the Sphere from “modes ...

Opening a new sequence can have SavePreAnimatedState and RestorePreAnimatedState called out of order

When switching to a sequence where the current time is not in the target view range the PreAnimatedState of the new sequence will be saved before restoring the PreAnimatedState of the old sequence.  ...

[Feature Request] 3D Text - Contextual Analysis - Localization

New Text 3D plugin does not process contextual analysis for Arabic Expected: Arabic characters should change shape based on the placement of a letter in a word (similar to how in English, a letter c ...