[CrashReport] Access violation - FBlueprintCompilationManagerImpl::ReinstanceBatch

UE - Gameplay - Blueprint - Jul 20, 2017

This is a trending crash in the 4.17 Preview. Unfortunately users have not provided any additional information. There is no record of this crash occurring in 4.16.2, so it is possibly a regression. ...

Japanese language input keys/Menu key zoom out graph view

UE - Editor - UI Systems - Localization - Oct 31, 2017

When using a Japanese keyboard, using Japanese language input special key(halfwidth/fullwidth/kanji key) zooms out graph view in BP editor and Material editor. It seems the menu key makes the editor ...

[CrashReport] UE4Editor_UMG!UPanelWidget::GetChildIndex() [panelwidget.cpp:52]

UE - Editor - UI Systems - Nov 10, 2017

This is a trending crash coming out of the 4.18 release. User DescriptionsI did click on compile on a widget an UE4 crash Source Context 46 int32 UPanelWidget::GetChildIndex(UWidget* Conten ...

Event dispatchers does not correctly compile with variable that is the same BP

UE - Gameplay - Blueprint - Nov 28, 2017

There is an issue occurring where Event dispatcher with inputs doesn't compile if they have a variable that is the same as the BP class. This issue only occurs with the variable being the same class ...

Sound Wave Actions Menu Closes Automatically When Changed to Columns View

Tools - Dec 15, 2017

After changing the view to columns (by going through Right click < Create Dialogue < View Options < Columns) the Sound Wave Action menu will close out automatically before any options can be selecte ...

Incorrect render target index assignment in GLSLBackend

UE - Graphics Features - May 18, 2018

While investigating [Link Removed], I have found that GLSLBackend always automatically generates render target location indices, regardless of user-specified ones via SV_TargetX HLSL semantics. Rel ...

Packaging a runtime plugin in a Blueprint project causes some Editor files to be deleted

UE - Foundation - Cpp Tools - Oct 22, 2018

Attempting to package a runtime plugin (does not occur with a Development plugin) in a Blueprint project fails in 4.21 Preview 2. This also causes some Editor files to be deleted, including the Modu ...

Project no longer builds when .cc file is included in the project

UE - Foundation - Cpp Tools - Jan 15, 2019

Including files with a .cc extension instead of .cpp in a code project used to build fine in Visual Studio. This is no longer the case in 4.21.2. The error message that results indicates that only C ...

UMG Widgets containing child widgets that have bound animations fail to save

UE - Editor - UI Systems - Jan 10, 2020

Adding a child widget that contains a bound animation to a separate widget blueprint results in failure to save. Working in 4.22.3 Tested in: 4.22.3 CL#7053642, 4.24.1 CL#10757647, 4.25 CL#108892 ...

[AI] Navmesh tiles on different layers get removed while streaming out in WP Dynamic Modifiers Only navmesh

UE - AI - Navigation - Feb 6, 2025

 Streaming out the navmesh and streaming the area back into the world before the GC runs causes the navmesh streamed back into the world to only have navmesh tiles on a layer with tiles that would b ...