Unreal Engine Issues
Unreal Engine Issues
Network Delay with RPC Functions/OnRep Properties
UE - Networking - Jun 5, 2017When attempting to call a RPC (NetMulticast, in this case) or use an OnRep_ Property, there seems to be a delay between setting the variable and it being replicated. In 4.15, this was around two t ...
Increase in Engine Stats for large amounts of Hierarchical Instanced Static Mesh Components
UE - Graphics Features - Apr 18, 2017Increase in Engine Stats for large amounts of Hierarchical Instanced Static Mesh Components User Description: We are having performance drops of almost 5ms in 4.15 when using "Hierarchical Instanc ...
Assertion failed: GEditor->GetSelectedActorCount() == 1 in FLevelEditorActionCallbacks::Paste_CanExecute
Tools - May 3, 2017This is a high frequency crash occurring for our users. It appears to be the same crash reported in [Link Removed], however that was fixed in 4.15.0, and the specific repro steps are verified to no ...
Destroying Actor via RepNotify After Seamless Travel Causes Pending Kill Warning
UE - Networking - Dec 15, 2016Attempting to destroy an actor via a repnotify after seamless travel is causing the actor to fail to be destroyed because of a pending kill warning: [2016.12.15-19.10.13:936][574]LogNetPackageMap:W ...
Landscape Splines in Partially Loaded World Partition Levels Can Cause Nanite Landscape Invalidation
UE - Graphics Tools - Terrain - Nov 7, 2025Certain placements of landscape splines in world partition levels can cause Nanite landscape proxies to invalidate, and switch back to their non-nanite version. This happens when specific regions of ...
ChaosWheeledVehicleMovementComponent is breaking the const CDO contract and changes to the instances are being applied to the CDO
UE - Simulation - Gameplay - Apr 28, 2025As described by the licensee, the const CDO contract is being broken on ChaosWheeledVehicleMovementComponent. The issue the licensee is facing is that by spawning cars with different configurations, ...
QAGame Crashes on launch on iphone 6 (iOS 8)
UE - Platform - Mobile - Jan 16, 2017this crash was encountered during the mobile compat for 4.15. So far, just this device has been affected. ...
Content Examples: Example 1.5 is stiff in Cloth Map
Docs - Samples - Apr 26, 2017Example 1.5 on Cloth Map seems very stiff in 4.16 compared to 4.15. Regression: Yes Works in 4.15 ...
Hot reloading newly created C++ project compiles modules
UE - Foundation - Core - Apr 25, 2017This is a regression from 4.15.2 and occurs on both Windows and Mac. Affects both Binary and Github builds. ...
SceneDepth Materials Rendering Black
UE - Graphics Features - Jun 2, 2017Scene Depth materials are rendering completely black. See the attached screenshots for comparisons between 4.15.3 and 4.16. This issue did not occur in 4.15.3, this is a regression. ...