Timer does not work in Object Class Blueprint

UE - Gameplay - Blueprint - Oct 10, 2017

After creating a timer in an Object Blueprint, timer is not called as intended. "InitObject" Event fires but "Call Function" function does not Reproduced in: 4.17.2 CL 3658906, 4.18 P3 3676890 Un ...

Move To Location or Actor Not Working if Location is Outside of Navmesh

UE - AI - Oct 17, 2017

Move To Location or Actor will always fail if the target location is outside of the Navmesh, even if Use Pathfinding is disabled. Found in 4.18 P4 CL# 3685441. Reproduced in 4.17.2 CL# 3658906 & 4. ...

Camera Actor variable (array) no longer editable in Blueprints

UE - Gameplay - Jun 7, 2018

This is a regression from 4.19. In 4.19 you were able to change the actor assigned to the array element in a Camera Actor variable. In 4.20 and 4.21 the field is grayed out and displays None with a ...

When Packaging a Blueprint Nativized Game, Child Actor BeginPlay is ignored and Parent BeginPlay is triggered instead

UE - Gameplay - Jul 5, 2018

In a Blueprint Nativized Packaged Game a child Blueprint will trigger its parent logic instead of its own when it is called. This was reported in 4.20 Preview 5 (CL-4173640). This issue has been r ...

When using a NavModifier with a NavBoundsVolume being in a SubLevel, unloading the level causes a crash.

UE - AI - Jul 19, 2018

When repeatedly loading and unloading sublevels with a NavBoundsVolume, it will cause a crash when using a NavModifierVolume. When the NavMesh is unloaded, it seems that the number of the DirtyLayer ...

Skylight Intensity Doesn't Behave The Same in OpenGL as with DirectX

UE - Graphics Features - Aug 10, 2018

Skylights in OpenGL will not behave hte same as it does in DirectX and will be incredibly bright. Images of the issue are also in the attached project folder. Working as intended in 4.19 CL# 403378 ...

Niagara Sprite SubUV Skips Images

UE - Niagara - Aug 14, 2018

Niagara SubUV will skip most images in a SubUV sprite. Every 8 frames on the time line once it starts spawning it will change its appears. Only 16 of the 64 images are shown from the SubUV. Found i ...

MSAA Causes Black Outline with Atmospheric Fog in Forward Shading

UE - Graphics Features - Sep 28, 2018

MSAA causes black aliased outline with Atmospheric Fog with Forward Shading enabled. This does not occur with TAA or FXAA. Also does not occur if there is a sky sphere present. Found in 4.19 CL# 40 ...

Max Draw Distance Can't Be Set Again Until Set Back to Default

Max draw distance cannot be changed to a higher value than it is first set, until you reset it back to default. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# 4369336, 4.21 CL# 4516095, ...

Duplicating a SetMaterialAttributes Node Causes Missing Attributes

UE - Rendering Architecture - Materials - Nov 5, 2018

Duplicate SetMaterialAttributes nodes will be missing attribute connections on the node itself, but in the properties tab they will show up. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 Previe ...