t.MaxFPS 0 locks FPS to 120 instead of unlocking it in Viewport

Tools - Nov 7, 2017

When unlocking FPS in Viewport it defaults to 120 instead of potential max FPS. If you do this during Launch the 't.MaxFPS 0' or 't.MaxFPS -1' commands unlock the FPS to the max the GPU allows in th ...

Editor crashes when assigning Landscape layer info while Forward Shading is enabled

UE - LD & Modeling - Terrain - Landscape - Nov 7, 2017

Crash occurs when Forward Shading is enabled in Forward Rendering Options User noted that if "Support Stationary Skylight" in Project Settings > Rendering > Shader Permutation Reduction is disabled ...

Linux: UI scale is sometimes not 1.0 on non-high-DPI monitors

UE - Platform - Linux - Nov 7, 2017

At the moment, UI scale is calculated on Linux from physical monitor dimensions (obtained ultimately from EDID) and not system scale. The granularity is 0.25, so scale can be 0.25, 0.5, 0.75, 1, 1.2 ...

No unique tooltip for Blueprint Name field when creating a blueprint from the Details panel

UE - Gameplay - Nov 7, 2017

REGRESSION: No, this is based on an older bug ([Link Removed]), but with new steps to reflect new editor behavior. When creating a blueprint from the Details panel, there isn't a unique tooltip for ...

MediaFramework movies not playing properly in Shipping

Media Framework - Nov 7, 2017

`check(Samples.Pop());` this kind of `Pop()` inside of a `check()` is in a few places in MediaSampleQueue.h and MediaSamples.cpp but `check()` expands to nothing in Shipping/Test, so, required work ...

Incorrect mouse position provided by the Get Mouse Position on Viewport node

Tools - Nov 6, 2017

The Get Mouse Position on Viewport node does not appear to give the correct position of the mouse in the viewport. The further the mouse is moved away from 0, 0, the greater the discrepancy appears ...

Expanding and altering a macro affects other macros in use.

UE - Gameplay - Blueprint - Nov 6, 2017

Using the Expand node feature on a macro from a macro library alters the current functionality of other instances of the macros that are in use(even though the macros themselves have not changed). ...

Unable to compile level blueprint after deleting a structure that was being used as a variable type

UE - Gameplay - Blueprint - Nov 6, 2017

After compiling, the variable disappears from the variable list which prevents the user from deleting it and being able to recompile the level succussfully Not a regression as it occurs in 4.18.1 a ...

Hierarchical and normal Instanced Static Mesh Components do not maintain PerInstanceRandom values when transforms are modified

UE - Graphics Features - Nov 6, 2017

When using PerInstanceRandom in a material that is applied to a Hierarchical or normal Instanced Static Mesh component, there are issues of the value resetting when certain transform operations are ...

Reference to child actor is invalid when compiling the parent blueprint

UE - Gameplay - Blueprint Compiler - Nov 6, 2017

Reference to child actor is invalid when compiling the parent blueprint. In this example, when compiling blueprint 'A' the print string result will say that "Child Actor ref is INVALID". However, if ...