Yes, tested yesterday. Only one project has it (its the one I found the issue), and you have to load the textures one by one for it to go away (the project is very large).
Can confirm this is happening to Most textures in materials every time I launch. If I resave the texture it fixes temporarily, but issue reappears upon re-opening map.
Materials are all turning Black.
I had this on something yesterday i was well confused. I had to manually open each texture then it was ok and it updated the mesh material to reflex the correct textures instead of black. I had seen this before but thought it was mainly due to working on a team ect but nope this project has only been me.