TomasHynk, you are right. The dev of Unity Tweak Tool just replied to me that he can't since its not supported in unity (without recompiling unity) and he also doesn't like/want this feature. :(
TomasHynk, you are right. The dev of Unity Tweak Tool just replied to me that he can't since its not supported in unity (without recompiling unity) and he also doesn't like/want this feature. :(