Scroll Bars for Certain Editor Windows are Reversed when using Trackpad on Mac

UE - Platform - Apple - Mar 25, 2015

Certain scroll bars within the Editor while on a Mac have their directions reversed. i.e. The 'World Outliner', the 'Details' panel within a 'Blueprint.' The suggested workaround I gave to the user ...

Multithreading Race Condition Crash with Anim Montages

OLD - Anim - Apr 2, 2015

Basically, the problem is that the Main Thread is able to run AActor::Tick() (including Blueprint Tick Events) at the same time that the animation system is running functions such as UAnimInstance:: ...

Binding a tool tip in UMG to a text variable will not work unless the tool tip already has a default value

UE - Editor - UI Systems - Apr 3, 2015

A tool tip that has been given a binding will not show up unless the tool tip has been given a default value. ...

Screen Space Ambient Occlusion Artifacts

Docs - Samples - Apr 3, 2015

Flickering occurs when using the Post Process Ambient Occlusion (Screen Space AO). This is more noticeable when using stronger values entered into the AO fields. I checked these settings in both 4 ...

Tessellation used on BSP causes severe graphical glitches on AMD cards

UE - Graphics Features - Jun 3, 2015

Tessellation used on BSP causes severe graphical glitches on AMD Radeon 200 Series cards. The Licensee also mentioned it occurs on the Nvidea GTX 970 (not tested) ...

Static + Dynamic CSM shadowing causes shadow acne for skeletal meshes on iOS

UE - Platform - Mobile - Jun 7, 2016

User reports Static + Dynamic CSM seems to cause horrible shadow acne on skeletal meshes. Believed to be the iOS depth bias issue. ...

Vive: Positional Latency with a Possesed Pawn's Camera Component

UE - Platform - XR - Jun 6, 2016

Workaround: Got to camera component, and disable "Auto Activate" and go to Class defaults and set "eye height" to 0... works for the project attached (to compare lag vs no lag) but its not a workar ...

Entering 'Games App Id' for Google Play Services without configuring apk packaging first crashes the editor

UE - Platform - Mobile - Jun 12, 2015

User reported that he was experiencing a crash when attempting to put in Games App ID in Android section of project settings. Note that this occurs only if the Configure Now button in the APKPackagi ...

Screen flickers and becomes overly bright when adding a widget to the screen

UE - Editor - UI Systems - Jun 8, 2015

When adding a widget (in this case a button) to the screen the right side and bottom of the screen begin to flicker and grow extremely bright. To make sure and reproduce the issue you will need to s ...

User Play Space Rot does not change anything in Client Play Camera Shake

UE - Gameplay - Jun 11, 2015

User does not change anything in Client Play Camera Shake. Reproduced in 4.8 and Main (//depot/UE4/Promotable-CL-2581498). This is a Regression: it works as expected in 4.7.6 ...