Sphere Object Not Firing Hit Events

UE - Gameplay - Mar 14, 2016

When moving a sphere using Add Actor World Offset, hit events on that sphere are not fired. However, doing the same thing with a cube causes hit events to fire off as expected. When you enable grav ...

Different Number of Frames imported from the same FBX between UE 4.8 and 4.9

OLD - Anim - Sep 14, 2015

Using the same import settings in UE4.8 and UE4.9 will result in a different number of frames of an animation being imported from the same FBX file. If you import the same fbx animation which in M ...

Random Number Generated in Constructor Returning Different Value on Begin Play

UE - Gameplay - Jan 13, 2016

When generating a random number using FMath::RandHelper() in the constructor of an actor, attempting to print that same number on BeginPlay returns a different value than the constructor. However, ...

Particle Ribbons not firing off consistently

UE - Graphics Features - Apr 8, 2016

Ribbon trails do not immediately follow the lead particle when fired. There is an inconsistent delay in some that cause them to either not fire or fire mid stream. This did not occur in 4.10.4, bu ...

On mouse down only fires with a double click for Left mouse button with certain input settings

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

The left mouse button press does not act as expected when the input setting "Default Viewport Mouse Capture Mode" is set to "Capture During Right mouse Down" TLDR: Left mouse button press fires wh ...

OnRep_BurstCounter Not Firing Reliably in ShooterGame

UE - Networking - Nov 17, 2017

In ShooterGame, when a Listen Server fires its weapon, the burst effect will not be replicated reliably to the client(s). Adding logging to OnRep_BurstCounter in ShooterWeapon.cpp will show that t ...

OnSmartLinkReached Event Not Firing in PIE

UE - AI - Sep 20, 2016

The OnSmartLinkReached event is not firing in PIE. This is a regression. In 4.12.5 the event fires as expected. Found in 4.13.0 CL 3106830 Reproduced in 4.14 Main CL 3129233. ...

Destructible Event OnComponentFracture fires multiple times when Debris flag is enabled.

UE - Simulation - Physics - Destruction - Jul 15, 2015

When using a Destructible that is using the Event OnComponentFracture and the flags for Debris timeout/max separation and Debris Enabled will cause the event to fire for each chunk removed from the ...

Event Possessed fires twice

UE - Gameplay - Blueprint - Jul 31, 2017

Event Possessed fires twice even if unpossessed is not called ...

Alt+Space does not fire in blueprints

UE - Gameplay - Blueprint - Feb 23, 2018

When using Alt+Spacebar the space event will not fire. This includes if Alt is added to the event via the details panel. In short the space bar will not fire an event while the Alt key is held down. ...