Unreal Engine Issues
Unreal Engine Issues
AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice
UE - AI - Navigation - Aug 15, 2025USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...
LIVE: RENDERING: Movable Mesh does not receive shadows from Static meshes in static or stationary lighting
UE - Graphics Features - Apr 30, 2014---------------------------------------------------------------------------------------------------------------------- Build: 4.1.0-2057451 Description: Movable meshes and blueprints set to cast n ...
Wrong density calculation in UBodySetup::CalculateMass
UE - Simulation - Core - Sep 29, 2025Wrong density calculation in UBodySetup::CalculateMass. The licensee has provided the following analysis and suggested fix: In UBodySetup::CalculateMass, the following code is present: // physical ...
Custom Event with array param does not take a pointer to the array
UE - Gameplay - Blueprint - Oct 12, 2016When an array is passed into a BP custom event, the array's data is passed to the event rather than a pointer to the array itself. This means edits made directly from the event node's input pin (su ...
Removing created event from level BP crashes editor if event is tied to object in level
UE - Gameplay - Blueprint - Feb 21, 2015UPDATE: 2/23/2015 Crash is limited to 4.6.1, does not occur in 4.7 Preview 8 or later builds (CL#2448202). ========================================================== Editor crashes if an event is ...
Bloated instruction counts in the material editor causing long compiles
UE - Graphics Features - Apr 17, 2019artists are dealing with greatly increased iteration times due to long shader compiles when working in the material editor. This has regressed over time as we add more features to the point were wor ...
When switching versions of UE4 the folder colors do not migrate with the project
Tools - Feb 27, 2015User reports when creating a project and changing the folder colors in 4.6, then opening the project in 4.7/4.7.1, the folders go back to their default color. Users have also reported this happenin ...
Initial Modules are clamped to a 0 to 1 time range
UE - Graphics Features - Sep 18, 2015The Initial Modules appear to be clamped to a zero to 1 time frame since 4.8 was released. Projects that are converted from 4.7.6 will have correctly working particle systems, but adding a new part ...
Continuous Crash Problems OSX Upon Save
Tools - Jan 13, 2015This seems to be a duplicate of JIRA [Link Removed]:https://jira.ol.epicgames.net/browse/UE-7289 User claims the editor crashes every time he goes to save his level or play in editor. Callstack: U ...
Crash undoing variable change in Animation Blueprint.
OLD - Anim - Aug 1, 2016Crash occurs when the user changes a variable in the animation blueprint, and then undo's the change. Note that this occurs with any variable being used, but the callstack will be some what differe ...