Compiling specific blueprints in user projects cause editor to freeze and become unresponsive

UE - Gameplay - Blueprint - Apr 28, 2016

Several users have reported that their projects cannot compile specific blueprints. In one a character blueprint and another a controller. In both instances, the editor becomes completely unresponsi ...

Force Feedback not pausing correctly during bGamePaused

UE - Gameplay - Jul 26, 2016

From UDN Question: https://udn.unrealengine.com/questions/304392/bug-clientplayforcefeedback-isnt-paused-when-game.html Tried with GamePad and Vive Controllers, having Gamepad wire connected + 2 Vi ...

Disable button style is not applied when a button is disabled

UE - Editor - UI Systems - Aug 24, 2015

If the user applies a material or texture to the disabled button style option the button will not used the material/texture that was used but will instead use the default grayed out button look. E ...

Begin and End Overlap events continuously trigger while a character moves within a collision component of a Blueprint Actor that Simulates Physics if the collision component has Auto Weld enabled

UE - Gameplay - Jun 29, 2015

Begin and End Overlap events continuously trigger while a character moves within a collision component of a Blueprint Actor that Simulates Physics if the collision component has Auto Weld enabled. ...

Default value for BP struct within BP struct not set

UE - Gameplay - Blueprint - Dec 15, 2017

If I set a certain default value for a struct within another struct, it is reset to "None" and the value is not accepted. Below are detailed steps to reproduce as well as a minimal project. Source: ...

Editor crash switching active level

UE - Gameplay - Aug 16, 2016

Editor Crash when switching from a level to its sublevel. The sublevel contains an instance of an actor that references a character actor. See UDN for full context. Orignal UDN:https://udn.unrealen ...

Stationary actor tooltip states stationary actor can be moved, moving actor results in warning spam

Tools - Aug 10, 2016

Either the tooltip for Stationary actors or the actors movement option is incorrect. The tooltip reads: "A stationary object can be changed in game, but enables cached lighting methods when not m ...

Skeletal Mesh Attached Via Socket Rotates Collision in Unexpected Manner

UE - Simulation - Physics - Jun 22, 2018

Collision snaps to socket at an unexpected angle. See attached screenshot for breakdown on what is expected and unexpected. Description provided by user: the collider of the root bone is turned - ...

abnormal sound output on UMG animation track

zComponent - Archive - Jan 28, 2022

Sound repeated at initial frame only on 4.27. it was worked fine on 4.26 and 4.25 It is probably a side effect caused by the sequencer changes below.​ Sequencer: Move Finalization phase back onto ...

Reliable multicast RPCs can be dropped

UE - Networking - Dec 23, 2015

As detailed in the linked UDN thread, if a server doesn't receive a network packet from a client in 1.5 seconds, it sets the client connection's ViewTarget to null. This will cause dropped reliable ...