Unreal Engine Issues
Unreal Engine Issues
Foliage is visually missing in HTML5
UE - Platform - Mobile - Jun 26, 2018Foliage is visually missing in HTML5. This is a new issue and does not occur in 4.19, I believe that it may be correlated to this issue here.https://jira.it.epicgames.net/browse/UE-59573 ...
Cube Render Target "Size X" Is Being Set as Y
UE - Graphics Features - Jul 30, 2018The cube render target "Size X" is being set as Y. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4234136 ...
Volumetric Lightmap Holes Appear Every Fifth Build
UE - Graphics Features - Sep 11, 2018Volumetric lightmap holes appear every fifth build. Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4348893 ...
TestEqual(TCHAR*, TCHAR*) function is testing pointer equality instead of values
UE - Automation Test - Oct 1, 2018A licensee has reported that the TestEqual(TCHAR*, TCHAR*) function tests for pointer equality instead of comparing two values, which does not accomplish what the function is meant to do. Regressio ...
GameplayTask classes that have a BeginSpawningActor function never call the Activate function
UE - AI - Oct 3, 2018A class that inherits from GameplayTask which also has a BeginSpawningActor function will not have its Activate function fired properly. Removing this function causes it to fire properly. Regressio ...
Crash when building lighting with a Basic shape in the level
UE - Graphics Features - Lumen - Oct 25, 2019Crash occurs when building the lighting with any Basic shape in the level. This crash occurs with Niagara plugin both enabled and disabled. This issue does not occur in 4.23 Issue only occurs on M ...
Rare crash when changing scalability settings rapidly
UE - Rendering - Architecture - RHI - Mar 10, 2026It seems like the code in RefreshSamplerStatesCallback() can overlap with FillUniformBuffer when it mutates the Wrap_WorldGroupSettings and Clamp_WorldGroupSettings FSharedSamplerState objects. Addi ...
Editor Crashes When Trying to Render Canvas From Blueprint
UE - Graphics Features - Feb 15, 2018This occurs in 4.19p but not in 4.18. Per User: As of current preview, there is no possibility to render in blueprint using canvas, (UCanvas::K2_DrawMaterialTriangle always ends up with assert in ...
Crash upon trying to add a variable to a struct array when the details panel is locked
Tools - Jul 12, 2018Attempting to add a new element to a struct array through the details panel when the panel is locked results in a crash. Regression?: No This issue did not occur exactly the same way in 4.18, but t ...
Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)
UE - Gameplay - Blueprint - Apr 20, 2018A 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. ...