Undo, Redo, Undoing a blueprint actor Replace action causes a crash

Tools - Aug 4, 2016

Undo, redo, undo after issuing a replace actor action causes the editor to crash. Found on: //UE4/Release-4.13 CL-3078131 Crash reporter: [Link Removed] Regression from //UE4/Release-4.12 CL-3053 ...

UCheatManager::ToggleDebugCamera() causes crash

UE - Gameplay - Oct 11, 2018

Toggling the Debug Camera with the UCheatManager::ToggleDebugCamera() function in a PlayerController derived class causes a crash. Tested in 4.19.2 (CL - 4033788), 4.20.3 (CL - 4369336), 4.21 (CL ...

[CrashReport] UE4Editor-MetalRHI.dylib!FMetalVertexBuffer::FMetalVertexBuffer()

UE - Graphics Features - Jul 25, 2017

This is a common Mac crash that has affected users since at least 4.14. Unfortunately users have not provided any descriptions of their actions when the crash occurred. ...

Editor crash when a Breakpoint is added to a Widget's Tick function

UE - Editor - UI Systems - Aug 18, 2017

Editor crashes when a widget's tick contains a breakpoint at a print string node. Based on 4.16 warning message, this appears to be caused by the text attempting to draw when no draw buffer is avai ...

Visible dithered quantization to remove banding in New Temporal AA Quality

UE - Graphics Features - Oct 6, 2015

Since changing the temporal history buffer to 11:11:10 from FP16, it looks as there is visible dithered quantization to remove banding when rendering. (Taken from conversation on Forum Post linked f ...

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 ...

Instanced Subobjects on Children BPs point to Parent BP's instance if both are loaded when creating the object

UE - Gameplay - Blueprint - Jun 27, 2018

The Instanced Subobject values for the Child_BP are same as what the Parent_BP subobject values are changed to before compile and saving both Blueprint Objects. Tested in 4.18.3 (CL-3832480), 4.19. ...

List Referenced Objects does not show referenced objects for a .umap asset

Tools - Apr 1, 2016

Opening the Reference Viewer for a level then right clicking on the level and selecting List Referenced Objects displays a message prompt stating "Object 'LevelName' doesn't refer to any non-ignored ...

Mouse Not Being Locked to Viewport in PIE

Tools - May 3, 2016

The mouse cursor is not being locked to the viewport during PIE in versions 4.11 and up. This is inconsistent with the behavior that was seen in 4.10 because the mouse was locked to the viewport du ...

Gameplay Tag Query Variables Don't Retain Custom Default Values in Custom Structs

UE - Gameplay - Dec 4, 2019

Gameplay Tag Query variables in custom structs created via the content browser do not retain custom default values. Found in 4.23.1 CL# 9631420 Reproduced in 4.24 Preview 4 CL3# 10387632, 4.25 Main ...