Unreal Engine Issues
Unreal Engine Issues
Packaged projects do not render in web page using Safari 10.0
UE - Platform - Mobile - Aug 9, 2016My Macbook Pro uses an Nvidia GeForce 750M and was on Safari 10.0 when this occurred. This did NOT occur on a Macbook Pro with the same card and using Safari 9.1.2. This did NOT occur on an iMac wi ...
A Blueprint containing a child actor component containing another Blueprint that derives from NavLinkProxy does not provide a nav path when a project is opened until paths are rebuilt
UE - AI - Jun 1, 2015If a Blueprint is derived from NavLinkProxy, and then that Blueprint is added to another Blueprint as a ChildActorComponent, the second Blueprint's Smart Link functionality will not work when the pr ...
Crash occurs when importing attached FBX with default import settings
UE - Editor - Content Pipeline - Import and Export - Dec 22, 2016While verifying a bug for 4.15 UE-39952 , I tried to repro in 4.14.2 and the editor crashed while attempting to import the attached FBX In 4.15, the Editor does NOT crash a window pops up stating t ...
Material With Hair Shading Model Draws On Top Of SSAO
UE - Graphics Features - Feb 6, 2017The Hair shader no longer allows ScreenSpace AO on areas of the screen it occupies. While in the Ambient Occlusion Visualizer it appears that the material draws on top of the SSAO. REGRESSION? Yes ...
Decal creates lighting artifacts on edge of meshes
UE - Graphics Features - Aug 22, 2017When using deferred decals there are artifacts that are caused by the emissive color of the decal when viewing the decals from a low angle. These artifacts appear as thin lines on the edges of the m ...
Checkbox steals input when set to "Self Hit Test Invisible"
UE - Editor - UI Systems - Nov 9, 2017There is an issue with the checkbox taking input when the visibility is set to "Self Hit Test Invisible". It should not be taking input as it should have the same properties as "Hit Test Invisible", ...
Reimporting an FBX file via the import button does not make the import options appear
Tools - Nov 28, 2017Reimporting an FBX file via the import button does not make the import options appear. Instead of allowing the FBX to reimport with new options, the FBX just re-imports. This issue is a regression. ...
Crash upon opening packaged game when Event Driven Loader is disabled
UE - Foundation - Core - Apr 26, 2019Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...
"Weld Simulated Bodies" Collision flips when welding Skeletal mesh to Static Mesh
UE - Simulation - Physics - Sep 20, 2019Collision flipped when welding a skeletal mesh to a static mesh. Welding Skeletal mesh as parent actor does not cause collision to flip. Showflag.Collision 1 shows correct collision. (However px ...
Vertex Interpolator causes depth-test to fail
UE - Graphics Features - Apr 23, 2020Vertex interpolator (semi-randomly) causes visual artifacts on meshes. This did not happen initially when using or creating this material function but started about 24 hours later but now happens st ...