Unreal Engine Issues
Unreal Engine Issues
Alpha Textures reimported via overwriting disappear from level
UE - Graphics Features - Nov 10, 2014When you reimport a texture that has an alpha by Importing and then overwriting the previous texture, all versions of that texture in any material or in the level complete disappear until you compil ...
Hierarchical LOD meshes are not frustum/occlusion culled
UE - World Creation - Worldbuilding Tools - HLOD - Jun 24, 2022Hierarchical LOD meshes are not frustum/occlusion culled ...
Use Camera Cut for Warmup does not take into account shot's camera cut track
UE - Virtual Production - Tools - MRQ - Aug 31, 2022Camera cut warmup does not take into account the shot's camera cut track when rendering from the master sequence. Rendering the shot alone will, however. ...
Patterns On Landscape Spline Normals
UE - Graphics Tools - Terrain - Oct 31, 2025On higher-density Landscapes, Landscape Splines can lead to patterned artifacts in the geometry normals. Also tested on //UE/Release-5.6, CL:45232827 ...
Paper2D Set Sprite function in Construction requires mobility to be set to Movable
UE - Gameplay - Paper2D - Jun 23, 2015If you set up a default Sprite in an Actor BP and in the construction script set the sprite to an Editable Sprite Variable, in order for the new sprite to show up mobility of Sprite and BP must be M ...
Outside of AnimBP's, Animation Sequences with negative Rate Scales do not animate
OLD - Anim - Mar 20, 2015Animation Sequences with negative Rate Scales do not play outside of using them in Animation Blueprints...unless they are looping. UPDATE: A negative rate scale value also breaks Anim Montages. ht ...
Adjusting play speed for animation causes notifies to trigger multiple times
UE - Anim - Sequencer - May 31, 2016Adjusting play speed for animation causes notifies to trigger multiple times. Creates a stuttering effect. ...
Dynamic Translucency Resolution Not Reported Correctly
UE - Rendering - Architecture - Mar 24, 2026The dynamic translucency resolution and other dynamic resolution values were tied to the primary dynamic resolution and never updated for each type of dynamic resolution. The scaling resolution fra ...
Overridden Interface Functions in Child BPs lose array output pins after closing/reopening the project and become invalid
UE - Gameplay - Blueprint - Feb 7, 2015Overridden Interface Functions in Child BPs lose array output pins after closing/reopening the project and become invalid. Reproduced in Main //depot/UE4/Promotable-CL-2434822 ...
bIsComposing assert with Japanese MS-IME input(candidate list related)
UE - Editor - UI Systems - Localization - Apr 18, 2017When using MS-IME as Japanese input method, scrolling out the text field out side the view causes bIsComposing to be set false - this state causes instability of the editor. Crash happened with Win ...