Unreal Engine Issues
Unreal Engine Issues
Niagara and Groom causes exception crash on Launch when using
UE - Simulation - Physics - Mar 2, 2020Trying a Launch after every step shows that the problem occurs as soon as the GroomAssetSystem is added to Niagara. If the GroomAssetSystem is removed, the game launches fine (but the hair doesn't m ...
Content Examples: Parallax Occlusion Map Feature no longer rendering self-shadows
UE - Graphics Features - Mar 2, 2020Parallax Occlusion Map Feature fails to render self-shadows as of the release of Unreal Engine v4.24.0 and has not been remedied since. The feature is perfectly functional in v4.23 [See attachments ...
Building a patch from the project launcher will crash unrealpak when pak encryption is enabled
UE - Foundation - Core - Mar 2, 2020When using unrealpak to make a patch, if the source pak data that a patch is based from is encrypted, you must specify the "patchcryptokeys" parameter on the command line so unrealpak knows which cr ...
Rare assertion comes up when cooking if sequencer camera track has only additive transform track
UE - Anim - Sequencer - Mar 2, 2020If a camera track has only additive transform track, some functions return uninitialized F3DTransformTrackToken made by default constructor. It causes a rare assertion. Please take a look at F3DTra ...
Crash when using ComplexCollisionMesh and the ComplexCollisionMesh has more material index than drawing mesh's material index
UE - Simulation - Physics - Mar 2, 2020When using ComplexCollisionMesh of StaticMesh asset, at the time of hit, the physical material refers to the material of the drawing mesh side using the material index of the collision mesh side. T ...
UMG Animations Scale Retainer Boxes When Only Translating them
UE - Editor - UI Systems - Feb 28, 2020When translating a retainer box in an UMG animation the scale of the retainer box is also affected. Attached is a 4.23 example project. Found in 4.24.3 CL#11590370 Reproduced in 4.23.1 CL#9631420, ...
The Gradient Paint Tool In Cloth Simulation Doesn't Work On Mac
UE - Simulation - Physics - Feb 28, 2020The Gradient Tool rotates the camera on Mac instead of painting the Gradient End Value. I wasn't able to test in Main on a Mac. There were no issues on Windows in 4.23.1, 4.24.3 and 4.26 Main. Foun ...
Niagara Ribbon Facing Mode Custom Side Vector does not work correctly
UE - Niagara - Feb 28, 2020The Custom Side Vector facing mode is no different than the Custom facing mode on Niagara ribbons. The linked UDN has more information on a potential cause, as well as a proposed fix. It looks like ...
Widget With Spinbox Crashes When Destrcutor Is Called With Multithreaded Destruction Enabled
UE - Foundation - Core - UObject - Feb 28, 2020When a widget with a spinbox is calls it's Destructor with "Multithreaded Destruction" enabled the engine crashes. I have tested in 4.23.1, 4.24.3, and 4.26 Main with "Multithreaded Destruction" dis ...
Writing UserActivityHint in GenericPlatformCrashContext might occur buffer overrun
Analytics - Engine - Feb 28, 2020[Link Removed] ...