Unreal Engine Issues
Unreal Engine Issues
Crash when compiling Blueprint class based off C++ actor with a Niagara component that has a user color curve
UE - Niagara - Mar 6, 2020When creating a blueprint class based on a C++ actor with a Niagara component, color curves will cause the editor to crash when compiling the blueprint. This will impact users creating their own cla ...
NavMesh does not build correctly to SkeletalMesh collision
UE - AI - Mar 16, 2015NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...
Reduced Tessellation at edge when using world displacement
UE - Graphics Features - Jan 11, 2016Adding a material to a mesh that is affected by world position offset has reduced tessellation around the meshes edges. This is seen when viewed in wireframe and is influenced based off of the angle ...
meta specifier ArrayClamp does not work with array in struct
UE - Gameplay - Blueprint - Sep 14, 2016Giving an int32 variable the specific ArrayClamp has no affect when the specified array is defined inside a USTRUCT(). Variable is able to be set to a value outside of specified struct's range. ...
Can't undo blueprint/material movement done by arrow keys
UE - Gameplay - Blueprint - Feb 8, 2017When moving nodes in materials and blueprints using the undo option doesn't undo the movements made by the arrow keys. This issue affects anything that uses nodes on an event graph. ...
FPS when adding instanced static meshes in a random order is significantly lower than adding them in order by X,Y,Z location
UE - Simulation - Physics - Apr 5, 2017Adding instanced static meshes in a random order by location gives 25% of normal frame rate, compared to adding them in order by X,Y,Z location. ...
OnUrlChanged does not fire on mobile
UE - Platform - Mobile - Sep 28, 2017When using On Url Changed event on mobile devices, the event does not appear to fire as expected. Tested on iphone 5 As a note: The function GetUrl appears to be similarly affected. ...
Error on Attempting to Save Map Containing Actor Sequence Component
UE - Anim - Sequencer - Sep 28, 2017colored text+Link to screencast of repro steps: + [Link Removed] -May take some clicking around even between windows -Will not save after this -Does not affect 4.16 ...
Blueprint Android app installers are named *UE4Game*.bat
UE - Platform - Mobile - Jun 4, 2018In 4.19 blueprint-based apps are named after the project name, but in 4.20 they are all called Install_UE4Game-armv7-es2.bat. This also affects the Uninstall_*.bat ...
Severe ghosting on animated objects when camera stops moving in sequences when using path tracer
UE - Graphics Features - Lumen - Aug 2, 2019Pixels seem to stop updating in the path tracer when a camera stops moving in sequence. Old color values from objects that have moved seem to still affect pixels they should not. ...