Eyedropper in the Color Picker window does not grab any color values on Mac/Linux

UE - Graphics Features - Jan 5, 2018

Trying to use the eyedropper in the color picker window on Mac fails to grab any color values. The colors will only update when hovering or clicking within the viewport but the colors shown aren't c ...

Spawned actors with meshes become invisible in editor after changing level

UE - Graphics Features - Sep 7, 2018

When moving actors spawned from within the editor to a new sublevel, their meshes stop rendering. However, if you open a new level then re-open the old level the meshes become visible again. You wil ...

Inconsistent Red X icons when using World Composition

UE - World Creation - Worldbuilding Tools - World Composition - Sep 20, 2018

This issue takes a few attempts to repro. Sometimes when saving the icons will remain normal, but other times a red X will be displayed instead. Opening up the Level that is displaying the X and re= ...

CharacterMovementComponent causes the Character to slide when jumping on moving objects

UE - Gameplay - Player Movement - Sep 21, 2018

When the CharacterMovementComponent makes the transition from falling to walking, it retains the forward velocity it had while falling. When the character lands on the moving object, its new velocit ...

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable

UE - Networking - Sep 25, 2018

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable. It implies extremely high lag on each lost RPC and all following ones. User lose ...

Distro GearVR package crashes on open

UE - Platform - XR - Jun 20, 2019

Since this is a shipping/distro build and the device must be unplugged from the machine to be used in the hmd, I am unable to get logging. Will try with developer mode on. The following warning is ...

Debug information is sometimes missing when compiling with cl-clang

UE - Foundation - Cpp Tools - UnrealBuildTool - Aug 24, 2023

Via UDN: As has been discussed previously here and in CL 20055361, debug information is sometimes missing when compiling with Clang. We've pinpointed this to debug information not being emitted fo ...

Depth of Field blur is inconsistent with r.ScreenPercentage == 100 (Dynamic resolution)

UE - Graphics Features - Oct 29, 2024

Depth of Field, with "r.DOF.Recombine.Quality = 0" will adjust the size of the depth in focus based on screen percentage. This might be related to over-fitting from the tile classification, because ...

Cannot place static mesh in location if foliage mesh is already placed in same location

UE - World Creation - Worldbuilding Tools - Foliage - May 12, 2015

If a foliage object is already placed in level at a location, it will delete any static mesh that is placed in the same location. ...

Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes

UE - Gameplay - Blueprint - Mar 15, 2015

Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes. Reproduced in 4.7.2 binary and Main (//depot/UE4/Promotable-CL-2478413) ...