Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)

UE - Gameplay - Blueprint - Apr 20, 2018

A crash occurs when switching back and forth between levels when using seamless travel. This happens if a multicast was called and if it contains a member variable. ...

Using a user generated timeline in blueprint causes an exception in engine code.

UE - Gameplay - May 13, 2015

This crash is caused by an exception that is thrown due to the functions inside of a blueprint based off a user-defined class that is suppose to mimic Timelines. ...

Character Movement Mode in Water Volume is affecting all clients

UE - Gameplay - Player Movement - Dec 16, 2019

Strange behavior concerning Character Movement Network Replication and a Water Physics Volume.  Upon entering water volume, Character Movement mode is set to swimming, however if more than one clien ...

Crash when exiting editor before EditorUtilityTask completes

UE - AI Workflows - UI Systems - UMG - May 29, 2024

If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...

Planar Reflections do not respect SkyLight intensity

UE - Graphics Features - Nov 14, 2017

Planar Reflection actor does not reflect the intensity change of the SkyLight. In attached images, the Intensity of the SkyLight is set to 2. The darker area on the right is affected by the Plana ...

Web Browsers widget components stop accepting input when toggling visibility with a delay if there is more than 5 browsers

UE - AI Workflows - UI Systems - UMG - Dec 5, 2022

This is not a regression. Tested in //UE5/Release-5.0 CL20979098 Web Browsers widget components stop accepting input when toggling visibility with a delay if there is more than 5 browsers. This onl ...

Assets in disabled Emitter will cooked and loaded in Game.

UE - Niagara - Aug 17, 2015

Assets referred from disabled Emitter will cooked and loaded in Game. And licensee wants to make ParticleSystem with some emitters and sometimes they want to keep emitters but disabled. But disabled ...

Windows SDKs not recognized for HoloLens Development

UE - Platform - XR - Jun 5, 2023

This is a regression as the issue does not occur in //UE5/Release-5.1 @ CL 23901901 ...

Full Body IK does not work properly when root bone has large scale

zComponent - Archive - Jul 20, 2023

FBIK becomes extremely unstable when the root bone scale has a value other than 1. ...

Client loses input after doubling the amount of physics objects in the level

UE - Networking - Mar 11, 2019

After doubling the number of physics objects in the level the client loses input/ignores input ...