I’d just like to add that the more I play with the nodes the more connectors disappear and my material becomes useless. I have also spent a lot of time on the material so I would hate to have to lose that and start again.
When I open the material, any nodes connected together still show the connectors, but if I disconnect a wire, the node connector also disappears.
Look at the Texture Sample, the red, blue and alpha connectors have all disappeared.
Copying all and pasting in a new material doesn’t fix anything. All my materials are behaving in the same way.
If I break a link, the connector disappears but I can undo to get the original connection back.
EDIT I found out how to fix this ‘problem’. There is a button at the top of the material menu called Connectors. I must have accidentally clicked it at some point.
Thank you for all the help.