Unreal Engine Issues
Unreal Engine Issues
Clients Joining a session destroy and recreate all actors in the level upon joining
UE - Networking - Apr 28, 2015When a new client joins a server all of the actors will be replaced with new copies of themselves. This will cause things like the construction script and event begin play nodes to fire off every ti ...
ServerTravel command doesn't work in PIE using seamless travel
UE - Gameplay - Aug 19, 2015The "servertravel" command doesn't function when running ShooterGame in Editor. A warning will show up in the Output Log: LogWorld:Warning: UWorld::ServerTravel: Seamless travel currently NOT supp ...
Setting 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 ...
Montage keyframes calculation error
OLD - Anim - Apr 28, 2016Animations are not showing proper length when converted to Montage. Up to 98 frames (AFAIK) when converted to Montage, the Montage will show the correct number of keys. However, a 100-frame anima ...
UE4Editor modules file is not written to properly when packaging a plugin
UE - Foundation - Cpp Tools - Plugin System - Apr 8, 2019The modules file that is generated when packaging a plugin appends a number to the end of the .dll reference, similar to hot reload modules. This causes the reference to refer to a nonexistent file. ...
Editor reports crashes and terminates for exceptions that would otherwise be cleared by structured exception handlers
UE - Foundation - Core - CrashReportClient - Jun 8, 2020In 4.25.1, I added a vectored exception handler to capture unhandled exceptions to the Editor process. This handler runs too soon. It doesn't let the structured exception handlers run first where ma ...
.mp4s cannot be played in default projects in UE5.
UE - Media Framework - Apr 6, 2022In UE4 (using DX11), WmfMedia was able to play .mp4 files by default. However, WmfMedia doesn't support playing .mp4s in DX12, which is what is used in UE5. Electra can handle playing .mp4s in UE5, ...
Merge Actors Tool Simplifies Nanite Meshes
UE - World Creation - Worldbuilding Tools - Merge Actor - May 19, 2023Tried every combination of LOD Selection Type, Nanite enanbled/disabled, the only way it would seem to get the full number of triangles from the source mesh into the merged mesh is to disable Nanite ...
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 ...
Make warning about using collision and 'components space' in RigidBody node more visible
UE - Simulation - Physics - Feb 1, 2017In the RigidBody anim node, if the user enables collision while Component Space Simulation is enabled, there will be warnings in the output log saying:Warning Trying to use world collision with comp ...