Crash upon trying to add a variable to a struct array when the details panel is locked

Tools - Jul 12, 2018

Attempting to add a new element to a struct array through the details panel when the panel is locked results in a crash. Regression?: No This issue did not occur exactly the same way in 4.18, but t ...

Crash in Skeletal Editor due to null ActorFactory reference

OLD - Anim - Feb 1, 2017

When a material is dragged/dropped into a skeletal editor's bone hierarchy, the editor will crash due to null ActorFactory Regression: Yes - Crash does not occur in 4.13.2 binary (CL 3172292) ...

Crash when element is added to a map variable with unhashable key

UE - Gameplay - Mar 21, 2017

Crash when element is added to a map variable with unhashable key. An error is thrown on compile but an element can still be added under the Details panel of the variable. Crash Reporter: [Link Rem ...

Crash when deleting mesh instances of a HISM component

UE - World Creation - Worldbuilding Tools - Foliage - Apr 24, 2019

When trying to delete an existing (and saved) mesh instance from a Hierarchical Instanced Static Mesh component the Editor crashes due to a failed assertion, however clearing all instances does not ...

Crash compiling a blueprint after changing a Text variable to String, while the Details panel are visible

UE - Gameplay - Blueprint Editor - Jul 29, 2020

Crash occurs when the user changes a Text variable to a String while the Details panel is displaying its properties, and then compiling. Crash does not seem to occur if the Details are not visible. ...

PIE - RendertoTarget is the same for all players

UE - Gameplay - Jan 5, 2016

Render Target is displayed across the client and server. Render target should only be displayed on the player and screen that spawns the actor. Note: Turning visibility off for the render target w ...

Code based BT task breaks after closing/reopening the editor

UE - AI - Sep 9, 2015

A behavior tree task created in code will break in the editor behavior tree. The BTTask node shows as red and says that the class cannot be found. Node must be deleted and replaced to fix the erro ...

Compile 'Note' on BP Interface events

UE - Gameplay - Feb 23, 2017

Compile 'Note' on BP Interface events. It happens in actor BPs and also BP Widgets. A similar issue was fixed back in 4.11 with Custom Events. Could be related? https://jira.it.epicgames.net/brows ...

Combobox shows no text in android device using Mac.

UE - Platform - Mobile - May 19, 2017

This issue is reproduced in 4.16 preview 3 version and in Mac, deployed into android device. And not reproduced in windows pc. Not reproduced in 4.15.2 launcher version(regression) Not reproduced on ...

PressMethod is not called in UButton::RebuildWidget()

UE - Editor - UI Systems - Slate - Nov 5, 2018

The void function UButton::RebuildWidget() does not call PressMethod when rebuilding the widget. Tested  4.19.2 (CL- 4033788), 4.20.3 (CL - 4369336), 4.21 (CL - 4537669), 4.22 (CL - 4531805) ...