Unreal Engine Issues

Pasting timeline components into another actor and then choosing "cancel" on fix self context function references results in a broken state

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, issue was reproduced. Regression - No ...

Light does not affect landscape splines in raster pipeline (non-RT)

The frame rate could be locked to around 45 occasionally on 90Hz android device.

Runtime import, does not generate proper materials

The models are darker than the one loaded directly in editor Left runtime, right editor [Image Removed][Image Removed] [Image Removed][Image Removed] You can find some details here from a udat ...

When the value of the TMap variable of the child blueprint is changed and compiled, it will restore to the default value of the parent blueprint.

For TMap variables of type struct created in blueprint, if change the default value in child blueprint and compile, it will restore to the default value of the parent actor. This problem does not o ...

Unused parameters listed as used but "found in none"

In material instances with the parent material depicted in the attached image I expected "Param" to be considered as unused since it's attached to Opacity and it's not used (ie not attached to outpu ...

DistanceFieldBentNormalAO does not appear to work with imposter UVs

I have not entirely ruled out any issues with the imposter material in the repro, there's a chance this is related to the normal rotations, but turning off distancefields entirely does fix the issue ...

Images Rendered by Movie Render Queue don't match the looking in viewport if After Tonemapping PP was applied

This might be a bug or by design which needs to be handle by certain pipeline (OCIO?), but it's quite confuse that such big difference compare the images rendered by MRQ to those seen in Editor view ...

Using "Windows + Up Arrow" does not work before clicking window or change inputmode to UI or GameAndUI

"Win and Up Arrow" is shortcut for changing to fullscreen mode, but it does not work properly before clicking window or change input mode to UI or GameAndUI. probably, Win API caused this issue, an ...

Vertex Interpolators broken in landscape materials

D:/Unreal/UE4_Release-4.27/Engine/Shaders/Private/LandscapeVertexFactory.ush(788,3-59): Shader FDebugViewModeVS, Permutation 0, VF FLandscapeVertexFactory[Image Removed]:/Unreal/UE4_Release-4.27/Eng ...