Unreal Engine Issues

Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level

Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...

Copy-pasted user created umg not updating if the template was modified

When copying/pasting a user created Widget into another widget any changes made to the copy will change the main Widget without making any changes to the copy. ...

GetClassDefaults should expose object properties if they are not instanced

The current GetClassDefaults is overly restrictive in what it allows to be modified and not. Object properties that point outwards (i.e. non-instanced) should be accessible. ...

Changing Levels Does't Clear Global DistanceField

In a packaged game or standalone, if you change map with DFAO enabled the previous DFAO will still be visible. This does not occur in PIE. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4613 ...

AStaticMeshActor::CheckForErrors using exact compare instead of epsilon

AStaticMeshActor::CheckForErrors() is producing slightly incorrect results due to position and scale being exact matched, instead of using an epsilon comparison. Rotation is using Euler angles for ...

GameplayTag category filters do not function on BP SET nodes.

BP SET nodes for FGameplayTags do not respect category filters, instead the dropdown shows an unfiltered list of all gameplay tags. Given the MyValue property decorated as follows: UPROPERTY(Edit ...

"Convert to Blueprint" removes ability to edit component properties

As noted by the user in the linked UDN question, this seems to be a problem with the PointLightComponent property on APointLight not having the VisibleAnywhere property descriptor. Also as noted, th ...

Unable to export UCX_mesh without UVs or generate mapping coords option ON

UBX Collision Rotation Is Set Incorrectly on FBX Import

Imported FBXs that use UBX will import their collision rotation incorrectly. You can see this when scaling the collision non-uniformly.  Found in 4.20 CL# 4369336, 4.21 CL# 4541578, and 4.22 CL# 46 ...

XboxOne D3D12 Graphics Artifacts

Multiple licensees are experiencing this problem. The repro should look like this initially: [Image Removed] But then over time will degrade overtime into something like this this, most likely cau ...