Unreal Engine Issues
Unreal Engine Issues
Missing Service Node warning when opening project
UE - AI - Sep 24, 2018Services in the Behavior Tree sometimes don't work when the project is first loaded. The Behavior Tree will print a "missing service node" warning and the BT will remain inactive. This was reported ...
Skeletal Mesh rigid body simulation is not being updated with correct bones locations right after Skeletal Mesh is spawned
UE - Simulation - Physics - Nov 5, 2018When simulating in Editor, the Skeletal Mesh bone locations are not being passed into simulate if the simulation is being toggled the same frame when the Mesh is being set on a Skeletal Mesh compone ...
Confusing build error message provided when semi-colon is not added after a forward declaration in an Interface header file
UE - Foundation - Cpp Tools - UnrealHeaderTool - Feb 15, 2019If a forward declaration of a class is made in the header file for an Interface class, and no semi-colon is included at the end of the forward declaration line, the build will fail with a confusing ...
Regression: Android Media Player Material - Plays on flipped normal
UE - Platform - Mobile - Jul 25, 2019Media Player Texture/Material is playing on opposite mesh normal. Confirmed on Note 4, Pixel XL and Oculus Quest Did NOT reproduce with Vulkan. Video Material is white on 4.22 and 4.23 iOS ...
Sound Quality is worse after import
UE - Audio - Feb 17, 2020After importing a sound file, it's sonic characteristics are changed and the sound is not the same as the original. This leads to inconsistency. The sound is the same with Compression set 100. Two ...
Number containers do not correctly parse equations
Tools - Jul 30, 2020In C++, arithmetic operators * and / have the same priority and therefore should be resolved left to right. In this case, * is being resolved first and / second. 1/128*128 and (1/128)*128 should p ...
Nvidia Graphics Drivers cause editor menus to flicker and disappear after using the editor for an extended period of time
UE - Graphics Features - Apr 16, 2021This issue seems to be occurring on a variety of Nvidia cards. So far, I haven't seen any indication that it is affecting AMD graphics cards. The majority of the reports have indicating that the pro ...
Editor 'Build All Levels' discards Volumetrics Lightmaps in persistent level
UE - Graphics Features - May 14, 2025Building the level or lightmaps can clear the volumetric lightmap. In 5.5, this requires you to perform a full build, or a lighting only build with a BSP brush in the scene. In 5.6, all level build ...
Static code functions cause associated blueprints to not compile after a hot reload
UE - Foundation - Cpp Tools - Hot Reload - Oct 14, 2016If a function inside a BlueprintFunctionLibrary class is declared as static, instances of the function node inside blueprints cause the blueprint to not save after a hot reload. This does not affec ...
Second Animation Sample added to AimOffset or Blendspace swaps with the first sample
OLD - Anim - Oct 3, 2016Second Animation Sample added to AimOffset or Blendspace swaps with the first sample Note: After adding a 3rd sample, they switch back to the correct position. Regression: Sort of. In previous ...