Adding a custom material to project doesn't update Material Type combo box of an open inspector

Steps to repro:

• Drag a cube into the scene
• Open the inspector panel
• Select the material of the cube
• Drag new custom material into the project from material library
• Click on "Material Type" combo box.

-> The newly added material should be available in the combo box but it is not.

Workaround: Changing item selection to something else and then back to the material refreshes the combo box.