Niagara Component can crash if ticked with a null tick function

UE - Niagara - Mar 12, 2021

Niagara components don't null check their tick functions, and can cause a crash as a result. Compare to UParticleSystemComponent::TickComponent which does. It's fairly common in the engine to pass n ...

Setting a sublevel to initially load interrupts starting movies

Tools - Jul 20, 2016

Movies set to "Wait for Movies to Complete" are interrupted when a sublevel is set to load initially. The movie should still play through to completion. Regression (no) issue (does) occur in 4.11. ...

LOD's pop in after LOD actors is visible in viewport.

UE - World Creation - Worldbuilding Tools - HLOD - Aug 15, 2016

REGRESSION: YesWORKING: 3039270 (4.12.5)BROKEN: 3087200 After Generating Proxy Meshes, the meshes in the LOD Actor will still change LODs when it is visible in the level. ...

Struct Ref pin in Set members in Struct node can be split

UE - Gameplay - Blueprint - Aug 2, 2016

Attempting to restore the structure pins of a set members in structure node duplicate the structure input or member variables of the structure. Regression (no) issue (does) occur in 4.11.2 ...

Adding and removing variables to character blueprint slowly builds RAM

UE - Gameplay - Blueprint - Oct 31, 2016

Adding and removing variables to character blueprint slowly builds RAM, this value does not drop until editor is closed and re-opened. Regression (no) issue (does) occur in 4.12.5 ...

Tick fires in PlayerController BP in Editor

UE - Gameplay - Blueprint - Oct 6, 2016

If a blueprint has any functionality on tick, the tick event will fire when a blueprint is restored within the editor after closing and reopening a project. Regression (no) issue (does) occur in 4 ...

Docking tabs is inconsistent in Mac editor

UE - Platform - Apple - Oct 17, 2016

Its very difficult to dock tabs next to each other in mac editor and also the white zones flicker when a tab is dragged around the screen. This is a regression from 4.13.2 at CL 3157003 ...

Crash Occurs While Running EQS Using Add Generated Vector Node

UE - AI - Sep 8, 2016

A crash is occurring when running a custom EQS generator that returns a Point and uses the Add Generated Vector node. This is a regression. No crash occurs with the same setup in 4.12.5. ...

Adding teleport node after AddMovementInput breaks jumping animation

UE - Gameplay - Jun 6, 2016

Calling the teleport node after the Add Movement Input nodes affects movement by preventing the character's capsule from updating, causing the mesh to hit the top of the capsule during the jump anim ...

Fix pause flags when recycling sound sources

UE - Audio - Dec 12, 2016

Issue is due to pause flags getting recycled when new sound sources are used from the sound source pool. This is a regression since 4.13, causing audio to pop. ...