Unreal Engine Issues
Unreal Engine Issues
Failed to launch project with -D3D10 Command Line Argument
UE - Graphics Features - Jun 3, 2019Adding the d3d10 command line argument to a package project results in a crash. This worked normally in 4.21 and below. ...
Character Jump Height is dependent on framerate
UE - Gameplay - Player Movement - Jul 17, 2020Character jump height is dependent on framerate, where lower framerate can result in reduced jump height. ...
Using a Shading Model node set to Unlit results in an invalid material with FromExpression domain
UE - Rendering - Architecture - Materials - Feb 29, 2024Create a materialSet its domain to From ExpressionRecreate the node graph as in the screenshot Note that the preview sphere is black. ...
Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes
UE - Gameplay - Blueprint - Mar 15, 2015Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes. Reproduced in 4.7.2 binary and Main (//depot/UE4/Promotable-CL-2478413) ...
PhysX Crash when spawning Instanced Static Mesh actors at Runtime
UE - Simulation - Physics - Destruction - Oct 13, 2015Bug generated from crash reporter. This crash has been found in 4.7.6 and still occurs in 4.8.3 and 4.9.2 to users. One user in particular still, and he experiences it often. I have not been able ...
Movie Scene Float sections do not blend when adding a key
UE - Anim - Sequencer - Apr 10, 2019Movie scene float tracks to not blend when adding new keys through the add key button if the value comes from outside sequencer. This is a result of a change introduced by CL: 4997300. ...
Color shifting occurs from screen probe gather ping-pong when Lumen active
UE - Graphics Features - Lumen - Apr 29, 2024A subtle yellow tint color shift occurs when Lumen is active due to usage of R11G11B10_Float targets, mostly from r.Lumen.ScreenProbeGather.SpatialFilterProbes where we ping-pong between R11G11B10_F ...
Texturing: RC 1.5 texturing hangs, RC 1.4.2 works fine with same dataset and workflow
RC - Texturing - Feb 13, 2025Tested on the provided project, it looks like the unwrap was provided, but then the process stuck. I also checked the Task manager and there wasn't almost any activity for RealityCapture.[Image Remo ...
Crash when Background Blur is added with Instanced Stereo enabled
UE - AI Workflows - UI Systems - UMG - Jan 26, 2026Setting multiple identical actors to replicate movement will crash on PIE with multiple players
UE - Networking - Jan 28, 2015If ten or more of the same actor in a level have the "replicate movement" checkbox set to true, the editor will crash on PIE if the number of players is set to 2 (or with 1/2/3 players if dedicated ...