Updating project modules causes custom blueprints to lose reference to parent class

UE - Gameplay - Blueprint - Jul 7, 2016

When changing the name of a module or creating a new module, updating the _API of a class to the new module will cause blueprints based on this class to lose reference ...

Camera Information across two Matinee Data groups do not persist from one to the other.

Tools - Aug 12, 2015

A user is trying to share data between two matinee actors. After creating a new Interp Data and creating a matinee for it, I add some animation to one of the two cameras in a camera group. I then ad ...

Blueprint 'Select' node: nodes connect to all input pins are evaluated while only one input is needed

UE - Gameplay - Blueprint - Aug 15, 2015

Originally marked Won't Fix in 2017. Issue reopened on May 1, 2024. All inputs of a Select blueprint node are evaluated, even though in the end only one value is selected. This is wasteful work. ...

Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc

UE - Gameplay - Blueprint - Sep 1, 2015

Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc. This is a regression; does NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2675088) ...

Opening a level in PIE after adding a variable to a struct referenced in the GameInstance crashes this project

UE - Gameplay - Blueprint - Sep 3, 2015

This user's project crashes on opening a level in PIE after adding a variable to a struct referenced in the GameInstance. Note that I had to do this twice to get the crash to occur. The project can ...

Adding a hole to landscape and previewing in OpenGL ES2(Mobile) Crashes UE4

UE - Platform - Mobile - Sep 4, 2015

Making a hole in a landscape and viewing in mobile preview using OpenGL ES2(Mobile) and stopping preview crashes editor. ...

Touch events may have wrong location from BindTouch delegate

UE - Platform - Mobile - Sep 17, 2015

Only the last touch event's location in the frame is used to send all events for a given finger index. A finder index may be reassigned after a release by another press in the same frame from a ver ...

AttachToComponent::KeepWorldTransform Causing Mesh to Flip

UE - Gameplay - Jul 18, 2016

Using AttachToComponent::KeepWorldTransform is causing a mesh to flip in the user project provided in the repro steps. This has not been reproduced in-house without using the mesh that the user has ...

Imported heightmaps with 2x2 sections crash editor

UE - LD & Modeling - Terrain - Landscape - Jul 18, 2016

Importing a heightmap with 2x2 segments seems to cause the editor to crash in 3 different instances: 1. Importing the same 2x2 segment landscape a second time after deleting the first instance 2. ...

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. ...