Unreal Engine Issues

Transform Origin Scale on the Level Sequencce Actor's Instance Data can affect rotations

Scale is used as part of the rotation calculation for transform multiplication, and it can have an effect in the sequence transform origins. It's expected that scale is completely ignored, and shou ...

Custom iOS icons don't appear on device for Windows BP projects (Binary Build)

iOS icons have stopped working for Windows BP projects again; this does not occur on Mac. It also does not occur when using a source build from p4 (only on a binary build from the launcher). Note t ...

ARCore: passthrough camera texture has blue and red channel swapped when building against gles 3.1

Skeletal Meshes do not work properly on Open GL ES 3.1 on Xiaomi Redmi 6

Skeletal meshes do not render or animate properly on the Xiaomi Redmi 6 (PowerVR GE8320) when using OpenGL ES3.1. This issue changed a bit from 4.19 to 4.20. In 4.19, the skeletal mesh seems to of ...

Yosemite users do not receive an "Unsupported version of OSX" message when opening 4.15 from the Epic Games Launcher

When trying to launch the Unreal Engine on OS X Yosemite form the Epic Games Launcher, the editor will not give a warning saying that the current version of OS X is not compatible. We were able t ...

Error maximum ps_5_0 sampler register index (16) exceeded on some materials in InfiltratorForward

Certain materials no longer compile in InfiltratorForward with Forward Shading enabled. These materials were not having this compile issue in //UE4/Main @ CL - 3231640 which is the CL before Dev-Ren ...

World Delta seconds appears to Cause a miss calculation (regression 4.12.3 -> 4.12.4)

If the user uses world delta seconds in a calculation there appears to be some incorrect values. Note there is also a users project attached if you would like to look at that example. ...

Color changing through material parameter collection in a emissive material will not affect lightmap baking, unless recompile the material.

VectorNoise Material Expression Position's tooltip says it accepts 2 or 3 dimensional vectors, but the node raises an error if a Float2 is input

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Changing the “show mouse cursor” variable of PlayerController with a mouse button input does not work the same as with a keyboard input

Using the mouse input to show the mouse cursor acts like an Alt+Tab. When clicking the mouse input again to no longer show the cursor, the camera controls stop at the edge of the screen. Reported i ...