Clicking on object causes EndInputTouch to fire on the press instead of the release

UE - Editor - UI Systems - Slate - Sep 18, 2018

When clicking on an object EndInputTouch sometimes fires on the press instead of the release. This was not an issue in 4.19.2 (CL-4033788) and is a regression. However the functionality doesn't appe ...

Marketplace plugins "missing precompiled manifest" on Mac

UE - Platform - Apple - Oct 12, 2021

Summary This issue was reported by a licensee via UDN. It appears that all of the plugins generate a "missing precompiled manifest" error when packaging a project on Mac in UE4.26.2.Licensee Platfor ...

Crash when enabling r.HairStrands.Visibility.PPLL

UE - Graphics Features - Mar 10, 2022

Licensee reports no crashes in EA2. It crashes in Preview 2. The project is uploaded in a BOX due to its large file size. [Link Removed] ...

MAC: Crash on startup

UE - Platform - Apple - Apr 10, 2015

"MacBook pro 13 2015 with yosemite 10.10.3 just crashed after launching ue4." The problem is that the recently introduced calls to IsRHIDeviceNVIDIA occur before the Mac code sets the GRHIVendorID ...

Get Hit Result Under Cursor By Channel Blocked by Hidden Actors

UE - Gameplay - May 11, 2017

Components that are hidden in game seem to be blocking hits from the Get Hit Result Under Cursor by Channel node when it's tracing Visibility. This behavior is not consistent with 4.15.2. In 4.15.2 ...

Flickering with foliage occurs when setting the world origin point

UE - World Creation - Worldbuilding Tools - Foliage - Dec 28, 2017

There is an issue with flickering with foliage that occurs when setting the world origin point. This issue does not appear to be a regression. Versions Tested: Issue occurs in all versions tested 4 ...

PIE gets stuck on infinite loop when Background Streaming is disabled

UE - Foundation - Core - Aug 24, 2018

When "Use Background Level Streaming" is disabled, the Editor gets stuck loading in PIE when you press Play. This is a regression from 4.19.2 (CL-4033788). This issue was reported and tested in 4.2 ...

Linux Vulkan editor crashes OOM on older graphics cards

UE - Graphics Features - Oct 19, 2018

Vulkan editor is very crashy on older cards due to memory pressure. I have to switch to OpenGL to work on the unrelated bugs. I'm attaching the details of the particular failure I had (see VulkanMe ...

Depth Fade breaks Lit Trans. Particles Casting Shadows

UE - Niagara - Dec 8, 2015

Adding a Depth Fade node into the Lit Translucent Material used on a Particle System will cause the particle to not cast Shadows. The behavior is a regression from 4.9.2. 4.9.2:[Image Removed] 4. ...

Update Instance Transform Rotation for HISM isn't working in a packaged game

UE - World Creation - Worldbuilding Tools - Foliage - Aug 22, 2018

Using 'Update Instance Transform' to rotate HISM instances will work in PIE, but won't work in a packaged game. This is a regression from 4.19.2 (CL-4033788). This issue was reported and tested in ...