Selecting All Actors and then moving them results in the children being offset from parents

Tools - Feb 9, 2021

When using Select All, the children are selected as well. When you move the actors, the children begin to move at different rates than the rest of the actors, resulting in them being offset when you ...

Niagara Simulation Stage + DynamicMaterialParameters crash

UE - Niagara - Feb 6, 2021

deleting the code "&& SimulationStages[i]->bEnabled" in UNiagaraEmitter::GetScripts will bypass the problem [Image Removed] ...

Expanded vector parameters in Material Layer instance properties stay greyed out when override enabled

UE - Rendering Architecture - Materials - Feb 5, 2021

This only seems to happen when the vector parameter is expanded, not when it's collapsed. Collapsing and re-expanding the parameter seems to clear the issue as well. The material seems to use the o ...

Deleting a material layer from a stack, re-linking the layers, then deleting that layer again crashes the editor

UE - Graphics Features - Feb 5, 2021

The important step here is to unlink the middle layer after first relinking everything. ...

Deleting a material layer from the stack reverts other layers' overridden parameters to default

UE - Graphics Features - Feb 5, 2021

It appears as though parameters for downstream material layers are reverted to their default values and override states when an upstream material layer is deleted. ...

Activate Reverb Effect node fails to activate when placed behind a Delay node

UE - Audio - Feb 3, 2021

It seems that the Activate Reverb Effect node is no longer functioning when put behind a Delay node. In the test project, there is an empty actor with a Event Begin Play connected to a Delay node wh ...

Interface cast nodes can be placed for non-object pins

UE - Gameplay - Blueprint - Feb 1, 2021

Interface Cast nodes appear to be returned as valid and context sensitive for every possible pin, even ones like floats and integers. Following the repro above, it is easy to place a node but it wil ...

Macros from temporary diff blueprints can be placed and corrupt blueprint

UE - Gameplay - Blueprint - Feb 1, 2021

Following the repro, a temporary copy of a BP Macro library is loaded into memory. When you right click to place a node, it incorrectly lists macros defined in this temporary library. They are fully ...

The LoadTimeFile argument crashes package at startup

UE - Foundation - Core - Feb 1, 2021