Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Deleting pins on Switch on Gameplay Tag Container node can cause a crash
UE - Gameplay - Blueprint Editor - Mar 15, 2017When adding/removing pins on a Switch on Gameplay Tag Container node, it can cause a crash. There are multiple ways to get this to happen when deleting pins, the order given in the reproduction step ...
CharacterMovement component is not accurately reflecting the characters velocity when becoming uncontrolled during movement.
UE - Gameplay - Sep 16, 2019The boolean "bRunPhysicsWithNoController" has an attached note that reads: " * Normally without a Controller, movement will be aborted and velocity and acceleration are zeroed if the character is w ...
Material Particle SubUV Sample does not work with Tex Object
UE - Rendering Architecture - Materials - Aug 29, 2025The Particle SubUV Sample node uses its own texture object reference instead of the one provided by the texture object node. ...
Scene Capture 2D Actor causes Flickering on Windows 10 when Launched in Standalone
UE - Graphics Features - May 2, 2016Screen/Playable window flickers when playing in Standalone on Windows 10. A few users are reporting this issue which is exclusive to Windows 10 and Standalone mode. There is another issue the could ...
4.14 Launcher version ships with UE4-VulkanRHI*.a but requires Github source
UE - Platform - Mobile - Nov 7, 2016Launcher build ships with VulkanRHI Android binaries but do not seem to support Vulkan on Android from the launcher build without source. ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...
Params in material instance disappear when grouping is changed in material with a material layer
UE - Rendering Architecture - Materials - Jan 11, 2025If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...
In UE 5.5, "Open Level By Name" is not able to find the map if the map is not added to "List of maps to include in a packaged build"
UE - Framework - Feb 13, 2025The "Open Level By Name" is not able to find the map to travel when the map is not included in the "List of maps to include in a packaged build" option. This issue was not happening in UE 5.3 and UE ...
Merge Actor tool can no longer merge just materials for an actor
UE - Gameplay - Jul 5, 2016In 4.11 when you selected an actor with multiple material elements with the merge actors tool open you had the option to merge the material elements into a single one. This option is no longer valid ...
Block noise on particles/skeletal meshes when launched onto certain Android devices
UE - Platform - Mobile - Oct 12, 2016When launching particles and skeletal meshes on certain devices, they create block noise pixels instead of a smooth flame for example. Regression: Yes Did not occur: Binary 4.12.5-3039270+++UE4+Rel ...