Assert caused by using FText::FromStringTable to initialize a FText property in the constructor of a UStruct based off FTableRowBase

UE - Foundation - Core - Jan 4, 2019

When using FText::FromStringTable to initialize an FText variable in the constructor of an FStruct that inherits from FTableRowBase, an assert is caused due to recursion. The assert is as follows:As ...

Volumetric fog does play nice with dynamic res

UE - Graphics Features - Jan 4, 2019

Dynamic resolution dynamically changes the the size of the viewport in render targets. The thing is when the resolution changes: it is reprojecting previous frame that is stored in history render ta ...

Landscape disappear under mobile preview after reopen level

UE - LD & Modeling - Terrain - Landscape - Jan 4, 2019

When trying to reopen a level with landscape under mobile preview, landscape's render data is not generated correctly. ...

Migrating a Niagara asset from one project to copies the Niagara plugin assets

UE - Niagara - Jan 3, 2019

Migrating a Niagara asset from one project to copies the Niagara plugin assets. ...

Skel Vert/Surf Emitter Location Local Not World Space

UE - Simulation - Physics - Character - Jan 3, 2019

A Skel Vert/Surf particle system attached to a cloth actor spawns particles around the origin instead of around the actor. ...

Create staticmeshnode or instancedstatic mesh node logs FNetGUIDCache warning in editor

UE - Networking - Jan 3, 2019

The behavior in question involves a warning that FNetGuidCache gives when an Actor's construction graph adds a static mesh component, and a multiplayer session with 2 players is simulated in PIE.(Pl ...

Enabling Merge GC Clusters and Blueprint Clustering causes a packaged Window project to crash

UE - Foundation - Core - Cooker - Jan 3, 2019

Enabling the check boxes for Merge GC Clusters and Blueprint Clustering causes packaged Windows projects to crash on startup. The log and dump files regarding this crash have been attached to this t ...

Static Lights with IES Profiles Will Bake an Incorrect Lightmap

UE - Graphics Features - Jan 3, 2019

When using an IES profile with a static light, the lightmap that gets baked will lose all detail of the IES profile. Example project attached. This doesn't occur in 4.19 CL# 4033788 Found in 4.20 ...

Only the last simple collision added to a static mesh is counted for sweep

UE - Simulation - Physics - Jan 3, 2019

When using multiple simple collisions on a static mesh it appears that sweep only uses the last collision added when calculating when/if to stop. ...

Replicated component leak on clients if RPC forces construction and server destroys it in the same frame

UE - Networking - Jan 3, 2019

RPCs called on actors force a channel to be opened and the actor to be replicated at least once. If the RPC is called on a new replicated component while the actor channel is already open, but the ...