Material Editor and Texture Editor don't update after creating new/deleting, when Material Browser is closed

Steps to reproduce:

• Create 3D project
• Open Material Editor view and hide Material Browser view
• In Material Editor, click "Create new material"
• -> Material Editor should update to show new material instead of Default Material, but it doesn't
• Click "Delete current material" in Material Editor
• -> Default Material is deleted, but still shown in the view
• -> Last remaining material cannot be removed from Material Editor even if Material Browser is open when trying to delete it
• Open Texture Editor (Material Browser closed)
• Click "Create new texture"
• -> View should update to show new texture, but it doesn't
• Open Material Browser
• -> Texture Editor now updates
• Click "Delete current texture"
• -> Texture is deleted but still shown in Texture Editor
• Expectation: Editors update to show new material/texture when creating new (no need to open Material Browser). Editors update to show remaining material/texture when deleting current, or text "There are no materials/textures in this project..." if there are none left.