Unreal Engine Issues
Unreal Engine Issues
Edited BP Variables show as "Multiple Values" in instanced reference
UE - Gameplay - Blueprint - Oct 30, 2017When a blueprint (A) contains a instanced reference to another blueprint (B) that is EditInlineNew, changing a value B causes the associated variable in A to display as "Multiple Vaules" Workaround ...
Sine Wave audio plays choppy in editor
UE - Audio - Dec 4, 2017Playing a sine wave as an audio sample in the editor produces a choppy sound when it does not outside of the editor. This issue does not appear to be a regression. Versions Tested: Issue occurs in ...
Levels Panel "Move To" function does not move level to desired location
Tools - Jun 6, 2018Levels Panel "Move To" function will not move level to the desired location. The menu will stay open and do nothing when you try to move it. Found in 4.18 CL# 3832480, 4.19 CL# 4033788, 4.20 Prev ...
Select All Descendants in World Outliner Does Not Highlight Everything Selected in Sub Folders
Tools - Sep 7, 2018Selecting all descendants of a folder hierarchy in the world outliner doesnt accurately show what all is selected. This does not always occur and is a visual bug. The items in the level are still se ...
Packaging/launching 2D Side Scroller template for HTML5 results in Black Screen on browsers
UE - Platform - Mobile - Oct 30, 2018Packaging or Launching the 2D Side Scroller template without making any edits results in issues that differ by browser. Firefox : A black screen appears (see screenshot) Chrome : 1/4th of the scre ...
Navigation Mesh ignores Hierarchical Instanced Static Meshes using "Build Paths" or the "Build" Button
UE - AI - Feb 1, 2019Hierarchical Instanced Static Meshes are partially ignored after building the navigation mesh. This is causing the navmesh to be generated within all or part the HISM instead of around it. This ...
Massive FPS drops in editor when moving mouse over menu items on Linux
UE - Platform - Linux - Apr 22, 2019Navigating various dropdown menus in the Editor causes the FPS to drop down to around 25 or 10 in the Viewport on an empty project. This does not reproduce on Windows with -vulkan This issues was ...
Cannot set auto success range to an invalid value in the AIPerception component
UE - AI - May 3, 2019When modifying the value of "Auto Success Range from Last Seen Location" to a value that is not it's default, you can not set it back to its default -1 one value. This was reported and tested in 4 ...
DirectX Tesselation Crash
UE - Graphics Features - Dec 12, 2017Per UDN Licensee: I have 2 crash repro when enabling DirectX12, both linked to tesselation and still present in 4.18 stock engine and easy to reproduce. Crash 1 -Start editor with DirectX12 -Cre ...
Ray traced shadow sample settings greater than 1 cause shadow artifacts
UE - Graphics Features - Lumen - Sep 23, 2020Alternative you can follow these steps to reproduce 1. Create a new project with ray tracing enabled 2. Activate the groom plugins 3. Import a groom asset into the scene 4. Add any light type to the ...