Unreal Engine Issues

Niagara ribbons flicker when receiving location events and not inheriting parent's normalized age

Ribbons that disable Inherit Parent Normalized Age flicker off when one ribbon reaches the end of its lifetime. This seems to be tied to the texture coordinates used in the default material, and off ...

Niagara crash when duplicating an emitter in the timeline through right-click menu

Trying to duplicate an emitter from the timeline crashes the editor. This looks to be the result of UMovieSceneNiagaraEmitterTrack not implementing the function SupportsType.  ...

Cascade sprite scales incorrectly / flickers when set Screen Alignment to Velocity

Very easy to reproduce. uasset file provided. Doesn't happen in 4.22.3 ...

Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.

The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...

None referenced NiagaraEmitters are contained in packaged game

[Image Removed] It's just storage waste. Because those assets will be never loaded on runtime. ...

PostProcessMaterial is not applied to NiagaraEditor preview

Screen Aligned(Velocity) particles deform at low velocity

Screen aligned particles with very low velocity will squash in 4.23+ (No squashing in 4.22) Confirmed in 4.25 MAIN at CL 10333042 ...

Vector Field Initial Rotation will always have the same initial rotations for each emitter instance

The Vector Field Initial rotation module will have the same rotation for all instances of the same emitter. This is a regression from 4.22. ...

"NO ASYNC TICK" in Cascade viewport when adding a Skel Vert/Surf Location

Adding a Skel Vert/Surf Location node to a Particle Effect causes it to stop displaying particles and throws the warning "No Async Tick". Toggling Skel Vert/Surf Location off allows the Particle to ...

The Rotate Around Point Niagara module does not account for current particle position

The rotate around point module no longer adds in particle position, so it does not account for other forces and modules effecting the particles, and will only spin in a circle by default. The user c ...