Unreal Engine Issues
Unreal Engine Issues
Enabling Allow Client Side Navigation results in a NavMesh Needs To Be Rebuilt error message on the Client
UE - AI - Dec 7, 2015Enabling Allow Client Side Navigation results in a NavMesh Needs To Be Rebuilt error message on the Client. The Client cannot use the nav mesh. This is a regression: this did not occur in 4.9.2 (th ...
Geometry Material Alignment not functioning in 4.8
Tools - Jun 15, 2015Material Alignment on BSPs are not functioning in 4.8.0 Release. This is a regression from 4.7.6. The issue does appear to be fixed and functional in 4.9 (Promotable-CL-2581018) ...
World Partition Converter- Soft object pointers to actors kept in scripted sublevels are incorrectly remapped to the main world during in place conversion
UE - World Creation - Worldbuilding Tools - World Partition - Jul 1, 2022From user:"We have ran into an issue with soft object pointer fixup/remapping with the World Partition converter. If you have a sublevel that contains a level script and an actor that is hard refer ...
Removing a parameter from a blueprint function in a library can cause actor classes calling it to lose their parent or instance data
UE - Gameplay - Blueprint - Oct 4, 2018Compile errors caused by an actor calling a function with something hooked up to a removed parameter can cause that actor to lose it's place in the hierarchy. Typically, the actor will be fixed once ...
Exiting VR Edit mode from simulating causes viewport mismatch
UE - Editor - Workflow Systems - Mar 5, 20169/19 VREditor sync notes: Should grey out the editor button while you're simulating ----------------------------------------- I noticed you can fix this issue by reseting the viewport by pressing t ...
Switch on custom enum causes compilation errors after Hot Reload
UE - Foundation - Core - Sep 28, 2015If the project is hot reloaded while a Switch on Enum is inside of a blueprint which is switching on a custom enum, the switch will become corrupted. It changes the 'selection' pin to take a Byte pa ...
Oodle CompressionLevelNameMap is missing an entry for Optimal5, leading to a crash in the texture editor
RAD - Oodle - Aug 2, 2024Due to a missing string in CompressionLevelNameMap in OodleDataCompression.cpp, it is possible for LevelName to be left uninitialised after parsing the compression effort, which causes a crash when ...
Disabling Editor Sounds Doesn't Prevent Compile Sound From Playing
Tools - Nov 10, 2015Disabling the Editor Sounds under Editor Preferences->Level Editor->Miscellaneous->Sound->Enable Editor Sounds doesn't stop the Compile sound from playing when you click the Compile button in the ed ...
Smoothing landscape removes landscape collision in smoothed areas
UE - LD & Modeling - Terrain - Landscape - Apr 27, 2016Smoothing user's landscape breaks collision, causing player to fall through the ground at points that have been smoothed. Resampling landscape fixes the error until smooth tool is used again. Regr ...
Map placed actor binding to another actor's Event Dispatcher (multicast delegate) results in duplicate bindings after blueprint recompile
UE - Framework - Blueprint - Apr 17, 2025Context Blueprint actors placed on the map can bind to another actor's event. If an ActorB has a reference to ActorA, it can bind to an event dispatcher in A by creating an event node in ActorB's e ...