Unreal Engine Issues
Unreal Engine Issues
Particle disappears if it is using PSA_Velocity and setting custom time dilation 0
UE - Graphics Features - Dec 7, 2016A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...
Function input Bool loses checked value when updating from 4.16 to 4.17
UE - Gameplay - Blueprint Editor - Oct 17, 2017Licensee reported that when updating from 4.16.1 to 4.17.2 the value of a function input Boolean is being reset. It is checked as True in 4.16, but when switching to 4.17, it is no longer checked. ( ...
Scaling actor along the Z Axis while the X and Y axis are set to 0.01 causes the Actor to stop rendering in the scene
UE - Graphics Features - May 27, 2022This is a regression tested in //UE5/Release-5.0 CL18319896 Scaling a Static Mesh along the Z Axis while the X and Y axes are set to 0.01 causes the Actor to stop rendering in the scene once the Z ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
Compiling with VS2019 16.6 later causes garbled characters in output window
UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 10, 2020Using old behavior by applying true to NMakeUseOemCodePage property solves this issue. in VCProject.cs// Project globals (project GUID, project type, SCC bindings, etc) { VCProjectFi ...
[CrashReport] Crash related to refreshing Destructible Mesh - SaveExistingSkelMeshData()
UE - Simulation - Physics - Destruction - Jul 20, 2017This is a common crash affecting users in 4.16. User DescriptionsPressing the button to restart the basic mesh in the destruction editor causes the crash.Refreshing a Destructible Mesh that has had ...
All console variables overridden in Movie Render Queue are set to 0 after the render queue runs
UE - Anim - Sequencer - Aug 4, 2020All console variables overridden in Movie Render Queue are set to 0 after the render queue runs. It's because all cached previous console variables are reset to 0 just before they are written back ...
NetUpdateFrequency Affected by Global Time Dilation
UE - Networking - Jan 13, 2025Changing the global time dilation in a multiplayer game affects the rate at which actors are considered for replication, and setting it to 0 will even cause replication to stop entirely (unless the ...
Translating bones in Persona is not affected by Snap Options
OLD - Anim - Dec 14, 2016In Persona, moving a socket around is not affected by any changes to snapping (scale or size). Rotation is affected however. This is similar to [Link Removed], but according to James Golding there ...
The slider handle in UMG is clipping at 0 and 1
UE - Editor - UI Systems - Jan 20, 2016If the user sets the value on the slider to 0 or 1 the handle will clip as it appears to go too far to either side. ...