Creating Anim Montage drops a frame(s)

UE - Anim - Gameplay - Dec 13, 2018

When creating an animation montage, it appears that frames can be lost. ...

The ConstructionScript not being called on drag

Tools - May 2, 2019

The construction script for a custom actor blueprint does not execute after drag when the scene component is selected. Tested in 4.21.2 (CL - 5660361), 4.22.1 (CL - 6063286), 4.23 (CL - 6248266) ...

Crash when using Consolas font on Android SDK 24

UE - Platform - Mobile - Mar 29, 2017

A licensee reported that using the Consolas font on Android will cause the game to crash. I've narrowed it down to only occurring in the Android 24 SDK and on the ASTC configuration. Using Android(A ...

If PVRTexToolCLI is not executable, invalid texture data is used and crash results when launching on device

UE - Platform - XR - Jul 5, 2017

Synced the code on Windows and transfered to Mac, the file PVRTexToolCLI lost its executable permission bits... UE4 couldn't run the tool, but carried on processing anyway, processing invalid textur ...

Crash when calling capture mouse as the return value in an OnKeyDown

UE - Editor - UI Systems - Sep 25, 2017

The editor crashes when calling an over ridden On Key down function in a widget in order to capture the mouse with the return value of the function. ...

Multiple Physics objects on the client in one place jitter and shake

UE - Simulation - Physics - Jun 4, 2018

When simulating physics on multiple objects, they appears to jitter and shake on the client. This can lead to differences between the server and the client. This is especially show cased when runnin ...

Crash due to LAN beacon packet incompatibility in 4.22

UE - Networking - Apr 17, 2019

We changed the IP address serialization format without bumping the LAN beacon packet version. Should just need to bump it up. ...

Standalone window played from editor hits assert Index >= 0 in UObjectArray

UE - Gameplay - Blueprint - Sep 23, 2016

Standalone window in editor will hit assert in a bit of time. Issue doesn't happen is playing standalone via Visual Studio. ...

Crash on exit PIE when playing with more than one player on Linux

UE - Platform - Linux - Oct 3, 2016

When playing in non-single player game in the editor (either set # players or check dedicated server checkbox), the editor will crash when the play session ends. Regression: Yes - editor does not c ...

Editor Freeze-Crash if Possessing Pawn with AI controller

UE - Gameplay - Mar 19, 2018

When trying to possess an already existing, uncontrolled character with an AI controller on server (from actor component) while in multiplayer mode, the editor keeps freezing until destroyed with t ...