Unreal Engine Issues
Unreal Engine Issues
Foliage is removed when erasing with Erase Density set to 1
UE - World Creation - Worldbuilding Tools - Foliage - Aug 19, 2016I found with a high density of foliage instances, you're able to erase some of them even when Erase Density is set to 1.0 ...
Translucent materials that use a render target has an incorrect alpha when using ES3.1 Preview in Editor
UE - Graphics Features - Aug 20, 2019The opacity of a render target used in a material appears to get over written when previewing Android ES3.1 in PIE if the material is set to be translucent. ...
Lightmap Coordinate Index is not automatically set to 1 on import any longer with lightmap UV
UE - Editor - Content Pipeline - Import and Export - Sep 6, 2016When importing a static mesh with a second UV channel setup for the lightmap the second UV is no longer being automatically assigned as the lightmap coordinate index. In 4.12 the second UV detected ...
Landscape holes retain collision if Mip level changed to 1
UE - LD & Modeling - Terrain - Landscape - May 19, 2015Landscape holes have collision if the mip level of the landscape is changed from 0 to 1. ...
Retopologized landscapes ignore collision when mip level set to 1
UE - LD & Modeling - Terrain - Landscape - May 14, 2015Object collision ignores landscape components that have been retopologized if the landscapes collision mip level is set to 1 instead of 0. ...
Draw Line in HUD does not respect alpha < 1.0
UE - Gameplay - May 2, 2016Draw Line in HUD does not respect alpha < 1.0, instead drawing completely opaque in all circumstances. Regression (No) issue (does) occur in 4.10.4 ...
Vulkan leaks memory when opening and closing windows
UE - Rendering - Architecture - RHI - Nov 22, 2019As described here: https://udn.unrealengine.com/questions/532725/index.html (1) Start Prebuilt Vanilla 4.23.1. with Vulkan enabled (2) Create a new project (3) Drag and drop the Sphere from “modes ...
Mobile Multi-View 4.23 preview regression
UE - Platform - XR - Jul 18, 2019Black-screen when mobile-multi view is enabled in 4.23 preview. Also confirmed on Oculus Go. +Occuring in 4.24 MAIN @ CL 7436536 Sidenote: In all tested engine versions - when enabling/disabin ...
Landscape displaces after converting file to Twinmotion 2026.1
TM - Core - Apr 23, 2026Reported in SF [Link Removed] The client has a file from Twinmotion 2025.2 that contains a sculpted landscape. When converting the file to Twinmotion 2026.1, the landscape becomes displaced from it ...
Character Movement Mode in Water Volume is affecting all clients
UE - Gameplay - Player Movement - Dec 16, 2019Strange behavior concerning Character Movement Network Replication and a Water Physics Volume. Upon entering water volume, Character Movement mode is set to swimming, however if more than one clien ...