Crash compiling Widget Blueprints that contain Dynamic Entry Boxes with their Entry Widget Class set to each other

UE - Editor - UI Systems - Jun 10, 2020

Currently the Dynamic Entry Box has no protection against recursion, leading to a stack overflow and a crash. This issue was reported and tested in 4.25 (CL-13144385). This was reproduced in 4.24.3 ...

STAT_AI_BehaviorTree_InstanceMemory is sometimes wildly inaccurate

UE - AI - Jun 10, 2020

From the UDN thread: Turns out this is caused by the way this stat was implemented for the FBehaviorTreeInstance struct: 1) You call IncMemoryStats on construct, before the struct is populated with ...

Render target size mistmatch in ShaderDrawDebug

UE - Graphics Features - Jun 9, 2020

We found a d3d debug validation assert in RDG_EVENT_NAME("ShaderDrawDebug"), with the full DLSS integration. It however also reproduces in  (4.25.1-release, dev-rendering and the plugin branch with ...

Dragging off a pin in a Blueprint Function Library function does not give the user option to make a Local Variable

UE - Gameplay - Blueprint Editor - Jun 9, 2020

When in a function in a Blueprint Function Library, dragging off a pin will not give the user the option to promote it to a local variable. You only have the option to make a global variable (which ...

Moving actor to another level breaks soft object reference

UE - Gameplay - Jun 9, 2020

REGRESSION: In 4.24, there was a fixup process that would allow the soft reference to remain valid. This seems to be missing in 4.25 Moving an actor to another sublevel immediately breaks soft ref ...

MovieRender Pipeline Skips Output Frames during GC

UE - Anim - Sequencer - Jun 8, 2020

This is being seen in the wild... can release a temporary fix until 4.26 when we can change the headers and fix it for real. ...

Text 3D Component not available in Blueprints

UE - Virtual Production - Jun 8, 2020

After enabling the Text3D plugin, Text3D component is not available to add to an Actor Blueprint in 4.25. This had previously worked in 4.24.3 ...

Editor reports crashes and terminates for exceptions that would otherwise be cleared by structured exception handlers

UE - Foundation - Core - CrashReportClient - Jun 8, 2020

In 4.25.1, I added a vectored exception handler to capture unhandled exceptions to the Editor process. This handler runs too soon. It doesn't let the structured exception handlers run first where ma ...

[Groom] Very thin hair has incorrect raytraced shadow on edges

UE - Graphics Features - Lumen - Jun 8, 2020

This only happens when 1) Hair Width is very small. e.g. 0.01 in the example 2) Light has raytraced shadow and Samples Per Pixel has a value > 1. e.g. 8 in the example The problem seems to be rel ...