Missing Materials From Materials Panel

I have seen multiple posts about this with no real answer - So here we go again…

When using the Materials Panel materials disappear constantly only to reappear then disappear again at random. How am I supposed to work if this keeps happening? This is professional software right?

There’s no way this is a feature and if it is then there needs to be a way to turn it off.

Can you share a screen shot or attach a .skp file in which this is happening. I do not experience materials disappearing, I expect we can find a reason this is happening to you.

A link to some of these multiple posts might help define the problem too.