When I minimize or move the tpt window, my right click becomes something else other than erase. I am making something that needs a refference to build. This issue is anoying.
I see you might be using TPT-Ultimata. That mod has a feature where right click changes to the opposite tool that you have selected. So like, HEAT selected would make right click act as COOL. It shouldn't cause this behavior but it's something to check.