Unreal Engine Issues

Collision does not work on Static Mesh created from BSP

After applying a Linear Stair brush to the editor and creating a Static Mesh from that brush, then setting its Collision Preset to BlockAll, the third person character is not able to walk up the sta ...

Objects are not cleaned up after gc when dragging a propery on a blueprint that reruns construction scripts

It appears that the editor's memory usage can jump by as much as a 1GB when using a spinbox in the editor. This also has the side effect of causing the editor to freeze/hang temporarily Note: The j ...

Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)

Interface Message Call does not work correctly with ExpandEnumAsExecs meta specifier

When using ExpandEnumAsExecs for the execution of a BlueprintImplementableEvent in a C++ interface, if the interface function is called by message, the result will always be as though you executed t ...

Destructible mesh loses collision and physics after packaging in 4.18.2

Destructible Meshes are losing collision and physics after a project has been packaged. They will work normally when running PIE. ...

Attenuation visualizers disappear from viewport when changed

MediaSound component attenuation radius preview disappears from viewport when changed. You need to deselect and re-select the actor when you want to see a preview of your attenuation fall off. You d ...

The CanLaunchURL() function does not do what it seems to imply that it does

The CanLaunchURL() function seems like it would check the provided URL to make sure it is valid. The comment for the function in GenericPlatformProcess.h appears to imply that this is what the funct ...

Audio components played at the same time appear to desync over time on Android

When playing the audio form multiple audio component at the same time, the audio appears to become desynced over time. ...

When using 'Is Hidden Ed' it behaves similar to 'Is Hidden Ed at Startup'

The tool tip for 'Is Hidden Ed' states "Returns true if the actor is hidden in the editor viewports" but it only actually flags true if "Hide Selected at Startup" is selected for the actor. Therefor ...

Deleting a project also deletes content of folders referenced by a Windows symbolic link

Deleting a project from the Epic Games Launcher will also delete any files that are located in external folders that the project includes via symbolic link. In this case the only thing that should b ...