Design Tool Broken

When the Design Tool is selected and you click on an item that cannot be customised, the red pop-up shows up as normal, but it doesn't disappear, even after clicking away, removing the item, exiting out of the design tool or even exiting bb mode. It happens with all items that have no swatches, base game and from packs. I have no mods installed and have never used them. I'm on PC.