Unreal Engine Issues
Unreal Engine Issues
Niagara: Losing focus when editor is open
UE - Anim - Sequencer - Apr 5, 2019Reported by a user from Reflector. ...
UIScaleCurve float-point value in BaseEngine.ini lacks precision
UE - Editor - UI Systems - Slate - Jun 4, 2020The screenshots below display 1920x1080pixel widget button. First one with Default DPIScaleCurve shows extra borders on the right and bottom. Next one with more precision shows no extra boundary. [ ...
InstanceOnly UProperties accessible in Blueprint
UE - Gameplay - Blueprint Editor - Nov 30, 2022Reproduced 3/3 times. Issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. ...
Disabled Skeletal Mesh Sections cause Shadow Ray Tracing Flicker
UE - Rendering - Graphics Features - Ray Tracing - Dec 12, 2025If a skeletal mesh has a section disabled the ray traced shadow will flicker when the camera or itself moves. Previously in 5.6.0 no raytraced shadow would appear if a section was disabled. This wa ...
Compiling a Blueprint that references a deleted Macro from a Custom Macro Library will crash the editor
UE - Gameplay - Blueprint - Sep 3, 2015Compiling a Blueprint that references a deleted Macro from a Custom Macro Library will crash the editor. Crash Report: [Link Removed] This is a regression: did NOT occur in 4.8.3. Reproduced in 4. ...
Widget interaction component appears to stop working after entering a physics volume
UE - Editor - UI Systems - Aug 24, 2016Widget interaction component appears to stop working after entering a physics volume. A Physics Volume appears to deactivate the Widget interaction component ...
UV Flipping Mode Causes Stretching of Particles
UE - Niagara - Nov 17, 2017If "UVFlipping Mode" under Rendering on the Required node of an emitter is set to anything other than "None," the particles can become stretched and distorted. As a workaround, I have discovered th ...
Adding HISMC instances resets wind for all existing instances
UE - Graphics Features - Jul 6, 2018When adding new HISM instances, actors using SpeedTree -> WorldPositionOffset material are reset. 4.19 Repro project provided by user. I was unable to get WPO wind working in 4.18, I did noticed th ...
Foliage: Speed tree wind is reset for every add/remove/update on instances
UE - World Creation - Worldbuilding Tools - Foliage - Jul 10, 2018Foliage: Speed tree wind is reset for every add/remove/update on instances What is happening:When we invalidate the render state, proxy are recreated, causing the wind to be removed and add again, ...
Unable to name a component if the name was used on a deleted component
Tools - Jan 29, 2015When deleted a component in the in world component editor, that name cannot be used for another component until the editor has been restarted. ...