Unreal Engine Issues

Missing scale for tangent with morph target

There is a bug in the fbx curve import code where we do not multiply the tangent by the scale parameter. Only the key value is currently scale. In 4.25 there was a hardcoded 0.01 scale but it was w ...

FConsoleVariableBase::SetOnChangedCallback behaves incompatibly with previous versions

FConsoleVariable::OnChangedCallback was changed to a multicast delegate in 4.26. Along with this, FConsoleVariableBase::SetOnChangedCallback was implemented to emulate a single delegate for compatib ...

World Partition causes client to disconnect from dedicated server

When using connecting to a World Partition level on a dedicated server the client get's disconnected immediately. I tested this with a non WP level and the client connected with no issues. I've inc ...

Oscillating Biquad Filter's Cutoff Frequency results in popping

Reproduced 7/10 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Additional Notes:Stacking more Biquad Filters produces a more noticeable effect, but ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...

CPU Particles do not Collide in Standalone or New Window Play Mode on Mac

When playing a game from a Standalone Game or New Window, CPU Particles will not keep their collision on a Mac. ...

STEP file containing Instances are not imported in Unreal

Crash when playing with Vulkan Mobile Preview

Occasionally getting a crash when playing with Vulkan Mobile Preview. Have not had it repro 100% of the time. ...

Allow promote to variable on Color structs/Vertex Colors structs for Procedural Mesh components

Issue: Currently, it is not possible to make a variable of type "Color" specifically for the color struct on procedural mesh components (see image attached). This is the only variable on procedura ...

Haptic Effects do not fire on Vive controllers

Playing haptic effects via the associated blueprint nodes (I.e. Play Haptic Effect, or Set Haptics by Value), does not trigger any feedback on the Vive's motion controllers. This does not reproduce ...