Unreal Engine Issues
Unreal Engine Issues
Physics Constraint Actor Won't Disable Collision Between Two Actors That Are Already Colliding
UE - Simulation - Physics - Feb 17, 2020Meshes that are colliding that are set as constraint actors don't follow the Physics Constraint Actors "Disable Collision" parameter if they are colliding prior to being set as constrained actors. ...
DynamicEntryBox with EntryBoxType Radial is stacking Entries if SectorCentralAngle is multiple of 360.0f and DistributeItemsEvenly is enabled
UE - AI Workflows - UI Systems - May 27, 2025DynamicEntryBox with EntryBoxType Radial is stacking Entries if SectorCentralAngle is multiple of 360.0f and DistributeItemsEvenly is enabled. The licensee has provided an analysis: On void SRadia ...
Canvas Render Target 2D doesn't get alpha mask when rendering with ES3.1
UE - Platform - Mobile - Apr 23, 2020The Alpha Mask on a Canvas Render Target 2D no longer appears when rendering with ES3.1. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 Preview 7 (CL-12759524) ...
Unnecessary reference remains in material instance when using StaticSwitch in material
UE - Graphics Features - Aug 7, 20191.Create a material that switches textures using StaticSwitch. 2.Create a material instance and toggle the switch to overwrite the texture. 3.Then return the static switch settings to their defaul ...
No Editor Audio on Linux when using ALSA
UE - Platform - Linux - Oct 31, 2017No sound play in editor when using ALSA (Advanced Linux Sound Architecture), and log spam when launching a project ...
Sidescroller Character Gets Stuck on Platform Edges When Moving on Tick
UE - Gameplay - Player Movement - Nov 2, 2015When converting the character movement in the sidescroller template to occur on Tick instead of key press, the character will begin to run, and then get slightly hung up on the edge of the platform ...
Renaming parent invalidates childs hierarchy
UE - Gameplay - Components - Jun 22, 2018When renaming the Parent of a Child Blueprint it invalidates the hierarchy of the Child Blueprint and nests its components under the DefaultSceneRoot. This bug was reported in 4.19.2 (CL-4033788) a ...
Sequential Level Loading in Python causes Crash
UE - Editor - Workflow Systems - Apr 16, 2019Loading all the levels selected in the Content Browser and running the aforementioned Python script causes the editor to crash Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...
Packaging for Linux in a binary build should be disabled when not supported
UE - Platform - Linux - Jan 5, 2015According to the user, if you install Linux toolchain, the binary build will allow you to package for it, and will not handle the failure gracefully ( https://forums.unrealengine.com/showthread.php? ...
ZenGarden's game sequence doesn't play on device
UE - Platform - Mobile - Jul 18, 2017Zen Garden loads, then the screen fades in and out as if it's ready to begin play. But when the player taps the screen, the only thing that moves are some lensflares, and the level never transitions ...