Unreal Engine Issues

Server using -useperfthreads command line causes crash if rendering thread is required for function execution

Crash when calling SetState inside state machine OnUpdate

The crash happens when SetState is called inside the function bound to OutputAnimationPose’s OnUpdate in the animation state. This way of using Set State node is the same as shown in the official do ...

After focus has switched to UMG the Arrow keys no longer function for moving the character until the user has return focus to the game

If the user clicks a button they cannot move their character with the arrow keys. ...

Blueprint function inputs can now be referenced as variables but renaming the inputs does not update the placed variable instances

[Dynamics Processor][Audio Bus Sidechain] - Audio Bus Sidechain doesn't function the second time a sound is triggered

Retriggering a sound using an Audio Bus as a sidechain on a Dynamics processor seems to not uses the sidechain. The sidechain will start working again if it's reset on the Dynamics Processor effect ...

FKeyHandle internal static atomic counter can overflow on long running games depending on usage pattern

Structure FKeyHandle stores an internal index, which is initialized from a static atomic counter in the default constructor: +----- FKeyHandle::FKeyHandle() { | static std::atomic<uint32> LastKey ...

The 'Add New Key' button does not function within the Actor Sequence Editor within an object that has the Actor Sequence Component.

The Actor Sequencer Timeline appears to not be able to correctly recognize the variables manipulated within the viewport. Thus, when attempting to add a keyframe after moving a component, within the ...

Timer does not work in Object Class Blueprint

After creating a timer in an Object Blueprint, timer is not called as intended. "InitObject" Event fires but "Call Function" function does not Reproduced in: 4.17.2 CL 3658906, 4.18 P3 3676890 Un ...

Interface cannot be re-implemented after removal from blueprint

If an interface is removed from a blueprint and an interface function is transferred to a local function, the interface cannot be re-implemented in the blueprint. ...

[MAC] Editor keyboard bindings do not allow overriding already bound shortcuts

When entering "ALT+B," to rebind keys to a function, red warning flashes for 1 frame, does not allow function to be rebound to this key combination *See attached image. ...