Unreal Engine Issues
Unreal Engine Issues
UI transparency breaks when dragging a game window around the screen
UE - Editor - UI Systems - Nov 20, 2017When a game window launched from UE is moved around the screen, any transparent elements on the screen will turn fully opaque. The loss of transparency also causes some text to become blurry. This d ...
"No value will be returned by reference" when calling Event Dispatcher with an Array
UE - Gameplay - Aug 14, 2018When creating an Event Dispatcher that sends an array, a blue Note shows up on the bottom of the Call node stating that "No value will be returned by reference". This is a similar issue to [Link Rem ...
Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level
UE - Graphics Features - Dec 5, 2018Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...
Gameplay Debugger doesn't work in ShooterGame when "Run Dedicated Server" is checked
UE - AI - May 10, 2019The Gameplay Debugger does not function in ShooterGame when "Run Dedicated Server" is checked. This issue only affects ShooterGame and works as expected in a Blank project or if "Run Dedicated Serve ...
Arrays of Soft Object local variables are not captured for reference graph
UE - Gameplay - Blueprint - May 20, 2019This bug comes from https://udn.unrealengine.com/questions/492861/view.html and is a very similar problem to [Link Removed] The issue is that the code that harvests soft object references stored in ...
Merging actors with two-sided materials produces incorrect results
UE - World Creation - Worldbuilding Tools - Merge Actor - Feb 24, 2020Merging two actors using a two-sided material produce incorrect results. Notes: Tested with "Allow two-sided material" on and off, the same result is produced. The same issue can be seen when ge ...
Color picker does not change the color of a Vector Parameter in a Material Instance until the mouse button is released
UE - Graphics Features - Mar 11, 2020This is a regression from 4.23.1 (CL-9631420). The color picker does not update in realtime anymore when holding down the left-mouse button. Only on mouse-release does it update. This was reported ...
Exporting a UE4 Animation into Maya results in wrong skin weight
UE - Editor - Content Pipeline - Datasmith - Importer - Apr 21, 2020UE4 Mannequin animations are not exporting/importing correctly into Maya. The right hand is bulkier and the left shoulder is dislocated. This was reported and tested in 4.23.1 (CL-9631420). this w ...
incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform
UE - Graphics Features - Mar 15, 2021in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...
SingleLayerWater is rendering brighter shallow water with fog
UE - Graphics Features - Jul 12, 2021Shallow water areas in scenes with exponential height fog will be brighter than they should be. Possibly due to the fog being applied twice in the SingleLayerWater shading model. ...