When the engine version updated, partial data of TMap/TSet type of DataTable is missing

UE - Foundation - Core - Jan 7, 2019

When updating to 4.21, Element previously added to DataTable is missing. This only occur when you move to 4.21. If it change from 4.19 to 4.20, DataTable will keep data. it can restore broken data b ...

[CrashReport] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::ReplaceInstancesOfClass_Inner() [kismetreinstanceutilities.cpp:1880]

UE - Gameplay - Blueprint Compiler - Oct 5, 2017

This is a somewhat common crash that has occurred throughout the 4.17 release. Users have not provided any description of their actions when the crash occurred. The callstack is similar to some ol ...

Get Mouse X and Y stops working when Show Mouse Cursor is enabled

UE - Editor - UI Systems - Slate - Mar 31, 2016

Get Mouse X and Y stops working when Show Mouse Cursor is enabled This did not happen in 4.10.4-2872498 User Description: hello im having a issue i believe its a bug. im making a city builder sty ...

Create Session does not work in a packaged game from any project that has used C++

UE - Networking - Dec 28, 2015

After adding C++ to a content-only project, Create Session no longer works in a packaged game. The following warning appears in the log: LogScript:Warning: CreateSession - Invalid or uninitialized ...

[CrashReport] AppleIntelHD5000GraphicsMTLDriver!SamplerStage::bindSamplerToTexture()

UE - Graphics Features - Nov 2, 2017

This is a trending Mac/Metal crash coming out of 4.18. Users have not provided any descriptions of their actions when the crash occurred. Callstack from Log[2017.10.30-21.59.52:157][767]LogSlate: T ...

[CrashReport] UE4Editor_Landscape!ALandscapeProxy::CreateLandscapeInfo() [landscape.cpp:752]

UE - LD & Modeling - Terrain - Landscape - Jul 14, 2017

This is a common crash affecting users through 4.14 to 4.16. Users have not provided any descriptions. Source Context 740 #if WITH_EDITOR 741 ULandscapeInfo* ALandscapeProxy::Creat ...

Setting color in linear color struct variable within another struct crashes the editor

UE - Gameplay - Blueprint - Jun 16, 2016

Setting color in linear color struct variable within another struct crashes the editor. Frequency: 4/4 Regression (yes) issue (does not) occur in 4.11.2 ...

Wildcard Array in Macro Causes Error Message to Appear

UE - Gameplay - Blueprint - Nov 9, 2015

Creating a Macro with a Wildcard Array and then using that macro to accept an array as input and attempting to get the first element causes an error to appear in the output log. In the AnswerHub u ...

Crash occurs when debug filter pop out tab is clicked while in line tab is present

UE - Editor - UI Systems - Slate - Jun 29, 2017

There is a crash that is occuring when resizing windows with the debug filter popped out. The Debug filter that gets popped out is persistant and does not disappear when the the in line option appea ...

Pasting variable nodes into a BP without those variables, should add them to the BP on paste.

UE - Gameplay - Blueprint - Jun 1, 2015

If nodes are copy/pasted from a project in 4.7 to a project in 4.8, various nodes will not copy over and must be remade in the 4.8 blueprint. ...