Unreal Engine Issues
Unreal Engine Issues
Slate draws the elements of an array even when the array is collapsed
Tools - Aug 20, 2015The elements of an array that are shown in the details panel (below the world outliner) are drawn even when the array is collapsed. This can cause a performance drop when using an array that has a l ...
Clear Timer by Function Name does not appear to be callable from a widget blueprint if the function is owned by a UObject
UE - Editor - UI Systems - Dec 12, 2016Clear Timer by Function Name does not appear to be callable from a widget blueprint if the function is owned by a UObject. The Timer clears when the custom event is called by other blueprints, howev ...
Refreshing node does not resolve error and causes tooltip to display another line with same message with each refresh.
UE - Gameplay - Apr 14, 2017Clicking the compile button in the Blueprint editor resolves the error. ...
Replicated Movement doesn't replicate itself to all clients on Dedicated Server
UE - Simulation - Physics - Jul 31, 2018This is a regression from 4.19.2 (CL-4033788). The pawns aren't replicating their own movement on their clients, but they are replicating on the clients of other pawns. This was reported and teste ...
HUD functionality is lost load after upgrading project to 4.24.1
Tools - Jan 22, 2020Upgrading a project to version 4.24.1 results in a loss of functionality that worked from 4.20 to 4.23.1 without having made any changes. Test Project: [Link Removed] Tested: 4.25 CL: 11062379 ...
Output Log In Engine and In Local Log File Are Inconsistent
UE - Foundation - Core - Feb 21, 2020The Log Timestamp doesn't display in local time when "Log Timestamp Mode" and "Display Timezone" are set to "Local Time". Found in 4.24.2 CL#11100242 Reproduced in 4.23.1 CL#9631420, 4.26 Main CL#1 ...
The "Is Pressed" node does not return true while using the virtual joysticks
UE - Editor - UI Systems - Apr 15, 2015If the user is pressing a button and then uses one of the virtual joysticks the "Is Pressed" node will return false even if the user is still holding down the button. ...
Opcode shader compilation error when using a TextureSampleParameterCubeArray node with hardware ray tracing enabled
UE - Graphics Features - Ray Tracing - Mar 31, 2025Materials containing a cube array texture sampling node will not compile when hardware ray tracing is enabled. The shader compilation error indicates that an invalid op code was used: "Opcode Sample ...
Modulated shadows do not render in the correct area on older devices / versions of Android OS
UE - Platform - Mobile - Apr 5, 2016This issue was reported by a user who was having issues with their modulated shadows showing up in random spots on their mobile devices. Their devices were a Samsung Galaxy Note 2 and a ASUS Zenfon ...
Blutility button not working after editing blueprint - need to reopen window
UE - Gameplay - Blueprint Editor - Feb 28, 2018Blutility buttons are broken if graph is edited while panel is open. User reported bug Video repro attached ...