Unreal Engine Issues
Unreal Engine Issues
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Crash right-clicking in anim blueprint asset picker
OLD - Anim - Mar 10, 2017Editor crashes when right-clicking in the blank area of the anim blueprint asset picker ...
Crash on PIE exit after dynamically enabling and disabling tick functions through the Level Script blueprint.
UE - Gameplay - Mar 23, 2018User reports hitting an assertion due to invalid FTickTaskManager state when game is attempting to unregister a tick function that was previously disabled dynamically. Failed assertion is in FTickT ...
Crash when Moving a Single Foliage Instance with over 15k Painted Instances
UE - World Creation - Worldbuilding Tools - Foliage - Apr 8, 2016A licensee is reporting a crash when he transforms/moves a single instance of foliage, when there are 15,000 or more painted instances of that mesh in a single map. Regression Yes, I tested the sam ...
D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()
UE - Graphics Features - Jan 18, 2017This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...
Text block Outline cropped out at large sizes
UE - Editor - UI Systems - Mar 8, 2017Text block Outline cropped out at large sizes. This affects Grid Panels and was additionally tested with Horizontal boxes with the same result Regression: This issue does not occur in 4.14.3 Binary ...
Crash on built project from Manual focus change of Cine Camera as Player Pawn
UE - Gameplay - Mar 20, 2017Crash on built project from Manual focus change of Cine Camera as Player Pawn Regression: Effects version 4.13.2 , 4.14.3, and 4.15.0 binary versions ...
Per-section shadow/collision flags lost when merging actors
OLD - Anim - Mar 24, 2017Information loss when merging actors such as cast shadow and collision. If one of the actors being merged has a different setting such as not casting shadows. This information will be lost and repla ...
Camera Cut tracks don't work in some packaged code projects
UE - Anim - Sequencer - Apr 10, 2017Camera Cut tracks don't work in some packaged code projects Regression: YES Working: 3249277 (4.14.3) Broken: 3348071 (4.15.1) Working: 3383544 (4.16 Main) ...
[CrashReport] Assertion failure in NameTypes.h after CookOnTheFly
UE - Foundation - Core - Apr 25, 2017This is a top crash occurring for users in the 4.14 and 4.15 releases. Unfortunately no user-descriptions of the issue have been provided, so information is limited. Despite a different callstack, ...