If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible

UE - Virtual Production - Tools - Jul 31, 2025

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible. The behavior only shows after d ...

Niagara - When a Static Switch is used inside a Niagara Function Script with "expose as pin" disabled, its Selector variable is exposed as an input on function call nodes. However, this input incorrectly loses its "static" type.

UE - Niagara - Apr 7, 2025

Consider a Niagara Function Script containing a Static Switch node with the "Expose as Pin" option disabled for its selector variable. When the function is called by another Niagara Function or Niag ...

Compiler Results Panel Displays No Information Upon Successful Compile

UE - Gameplay - Blueprint - Jul 8, 2016

Compiling a blueprint successfully displays no information in the Compiler Results window. However, if there are any errors, these will show up. This does not occur in 4.11.2 or 4.12.5. This is a ...

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. ...

Transfering an interface function to a native blueprint function does not copy over inputs and outputs

UE - Gameplay - Blueprint - Aug 19, 2016

When you remove an interface from a blueprint and choose to transfer the functions over to the blueprint the functions do not keep their inputs and outputs. Regression: YesWorks: 4.12.5 @ 3039270Br ...

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 ...

Dropdowns display incorrectly in non 1:1 zoom in BP on Mac and PC

Tools - Nov 16, 2016

On a Mac in UE4.14, drop down menus on the appropriate nodes will not display correctly when the Event Graph is zoomed out below a 1:1 ratio. Regression: Does not occur in UE4:13 ...

Play rate track does not work when using CreateLevelSequencePlayer

UE - Anim - Sequencer - Oct 13, 2016

Play rate track does not work when using CreateLevelSequencePlayer Regression: YES Worked: 4.12.5 CL:3039270 Broken: 4.13.1 CL:3142249 ...

Setting Slate Font Info default value in struct crashes editor

UE - Gameplay - Blueprint - May 19, 2016

Setting Slate Font Info default value in struct crashes editor Frequency: 3/3 Crashreporter N/A Regression (no) issue (does) occur in 4.11.2 ...

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 ...