Proxy Table allows creating a Nested Chooser, but Edit does not open it

UE - Runtime - Animation - Nov 3, 2026

A Proxy Table entry allows selecting Nested Chooser and creating an embedded Chooser Table. The new Chooser's name appears in the entry, but clicking Edit does not open it, preventing us from config ...

Include Render Pass name as variable in Filename Format field

UE - Anim - Sequencer - Jan 4, 2016

When outputting with Custom Render Passes, the Render Pass is automatically added at the end of the output frame file name. We have a few variables that we can control in the FileName Format sectio ...

[CrashReport] UE4Editor_UnrealEd!SaveWorld() [filehelpers.cpp:359]

Tools - Aug 31, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: !bIsReentrant [L ...

OnParticleCollide Not Returning Velocity Values Properly

UE - Graphics Features - Oct 23, 2017

OnParticleCollide doesn't return Velocity on every collision. User description: "If you add a particle emitter, and add an Event Generator - Collision and Actor Collision Binding an event to tha ...

[CrashReport] ispc_texcomp!<Unknown> - while launching to Android

UE - Platform - Mobile - Oct 25, 2017

This is an early crash coming out of 4.18 that appears to occur when launching projects onto Android devices. It also seems frequently related to ARCore. User DescriptionsSo this is the example pr ...

NetDriver time becomes unusable after long running sessions

UE - Networking - Jan 8, 2018

This issue has been around for a long time (potentially UE3). UNetDriver::Time is a float, which is updated by accumulating Delta Time during ticks. This means the longer a game runs, and the highe ...

Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1

UE - Networking - Feb 4, 2016

Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1. The Client pauses the timer as expected. With only one player, timers are paused as expected. ...

'Use Translucency Vertex Fog' does not work on Metal

UE - Graphics Features - Nov 15, 2016

'Use Translucency Vertex Fog' does not work on Metal despite the following release notes: According to 4.13 Releases Notes:[Link Removed] "New: Shader Model 5 Rendering for Mac Mac Metal now has i ...

[CrashReport] <unknown module>!UE4Editor_TrueSkyPlugin!FTrueSkyPlugin::RenderFrame()

UE - Graphics Features - Mar 6, 2017

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...

Painted Foliage Instances Randomly Culling in Splitscreen Multiplayer

UE - World Creation - Worldbuilding Tools - Foliage - Mar 15, 2017

Foliage instances are behaving strangely when playing splitscreen multiplayer in a single instance window. The instances will cull in and out of visibility depending on the size of the current playa ...