Procedural meshes spawned at runtime cause a crash

UE - Simulation - Physics - Jan 10, 2017

When using a procedural mesh at runtime, projects fail on mobile devices. Tested on both Android Nvidia Shield and iPhone 6+. ...

Redundant Material Slots Added To Mesh With LODs After Upgrading To 4.14 And Higher

Tools - Mar 9, 2017

When upgrading a project that was prior to the material slot implementation to a newer engine version will cause redundant material slots to be created. This requires the mesh to have LODs and multi ...

Get Input Touch State produces incorrect vector position

UE - Gameplay - Input - Sep 25, 2018

Get Input Touch State produces incorrect vector position when using it on Android. Tested in 4.19.2 (CL - 4033788), 4.20.3 (CL - 4369336), 4.21 (CL - 4395058) ...

incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform

UE - Graphics Features - Mar 15, 2021

in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...

SingleLayerWater is rendering brighter shallow water with fog

UE - Graphics Features - Jul 12, 2021

Shallow water areas in scenes with exponential height fog will be brighter than they should be. Possibly due to the fog being applied twice in the SingleLayerWater shading model. ...

Crash reimporting Geometry Cache with Per X Frames

UE - Gameplay - Aug 12, 2016

Crash occurs when the user reimports a geometry cache asset and changes the Sampling Type to Per X Frames. This seems to only occur if Frame Start is set to a value other than 0. ...

Mac Safari HTML5 Launch On - Unresponsive WASD controls while in Full Screen

UE - Platform - Mobile - Sep 19, 2016

I was testing launch on test for mac and wanted to see if the full screen works properly as there were issues with that before. I discovered that after selecting full screen, I was not able to move ...

Crash: Corrupt asset/map data is no longer correctly detected and handled

UE - Foundation - Core - Oct 27, 2016

Corrupted data was previously handled gracefully without crashing, but in 4x14 the same data crashes the editor. ...

Moving RecastNavMesh in the level and then toggling Display settings causes the navmesh to move in the level

UE - AI - Apr 2, 2018

If the user moves the RecastNavMesh actor in the level, the navmesh will be offset each time they change a Display setting in the Details panel. ...

Niagara Simulation Stage + DynamicMaterialParameters crash

UE - Niagara - Feb 6, 2021

deleting the code "&& SimulationStages[i]->bEnabled" in UNiagaraEmitter::GetScripts will bypass the problem [Image Removed] ...