Unreal Engine Issues
Unreal Engine Issues
OnAudioPlaybackPercent doesn't work after restarting the project
UE - Audio - Feb 7, 2019Using the OnAudioPlayback event in Blueprints does not work when playing the audio component its connected to while PIE, after restarting the project. Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL ...
Complex morph target motion vectors flicker
UE - Graphics Features - Lumen - May 16, 2022Morphing target flickers when switching between complex targets. This occurs when global illumination is set to Lumen. Per talk with analyst, it greatly improves when using SSR or None instead of Lu ...
Renaming variables in parent blueprint resets values for child blueprints
UE - Gameplay - Blueprint - Oct 23, 2015Renaming a variable in a parent blueprint will reset the value of that variable for any child blueprint based on the parent within the level viewport. ...
Instanced Stereo enabled makes Material Billboard Components only Rendering in One Eye for Vive
UE - Platform - XR - Oct 20, 2016Material Billboard components are only rendering in one eye with the 'Instanced Stereo' setting enabled in the Project Settings > Rendering menu. If instanced stereo is disabled, it renders as expe ...
Render Target "Auto Generate Mips" Does Not Work As Expected
UE - Graphics Features - Dec 12, 2016The auto generate mips feature for render targets doesn't seem to work. The generated mips render black. ...
Network Delay with RPC Functions/OnRep Properties
UE - Networking - Jun 5, 2017When attempting to call a RPC (NetMulticast, in this case) or use an OnRep_ Property, there seems to be a delay between setting the variable and it being replicated. In 4.15, this was around two t ...
Oculus NetDriver Regression/Fix
UE - Platform - XR - Oct 26, 2019From https://github.com/Oculus-VR/UnrealEngine/issues/60#issuecomment-544537005 UOculusNetDriver::LowLevelSend was modified to take an FInternetAddr pointer instead of an FString (due to the same c ...
Subtraction Node wild card inputs incorrectly assigns Time Span data type when given a Date Time data type
UE - Gameplay - Blueprint - Nov 18, 2021This is a regression //UE4/Release-4.27 has "DateTime - DateTime" and a "DateTime - TimeSpan" node. The subtraction node, with wild card inputs, incorrectly assigns Time Span data type when fed a D ...
Touches on windows generate 2 mouse events.
UE - Editor - UI Systems - Slate - Mar 22, 2017The problem is that windows supplies both a touch event and a mouse event for each touch. The engine then handles touches as mouse input so that UI elements can work correctly on touch platforms. ...
Mesh Renders in Main Pass if Both "Render CustomDepth Pass" & "Render in Depth Pass" Are Enabled, While "Render In Main Pass" is Disabled
UE - Graphics Features - Dec 25, 2019Meshes set to not render in the Main Pass still does if both "Render CustomDepth Pass" & "Render in Depth Pass" are enabled, while "Render in Main Pass" is disabled. Attached is an example project. ...