Material Editor does not update when adding Content Library materials and Material Browser is closed

Steps to reproduce:

• Create/open a 3D project
• Close Material Browser view
• Open Material Editor view
• Open Content Library - Materials
• Download e.g. Brick material and click + to add to the project
• Would expect Material Editor to update and show Brick material, but instead Default Material is shown.
• Same issue when adding Content Library - User Asset - Materials