Hi) Thanks for A4. But I find one bug. If I press render material in material list - object with this material disappears (object exists but not visible).. So.. this bug make work impossible. So - Blend Material in viewport becomes clear. It is not confortable.
Yeap..! It happens here too! I can confirm this. Thanx for the work guys!
Yes i can confirm too, but i don`t use that option, instead i hold+drag with right-click on the preview and i re-renders the mat preview. This works in the material attributes, not in the material manager tho