Right now when you resize one column it also resizes adjacent ones. Is there anyway to stop that? Because if I resize one column, then the column next to it becomes smaller, so I have to resize it to make it bigger but that resizes the other column again. It takes multiple resizes before I get them how I like them. Then if I make the emClient window smaller it mucks everything up again and I have to do it all over again. It is very annoying.
I just tested what you describe and I can confirm this behaviour. Unfortunately, this is the only way how you can use the grid lines so I’ll change this thread to Idea and other users can comment it.