Behind the curtains

Could we, please, have an option to set left and right columns initially closed in a published project!
(It would spare me, at least in 1/3 of what I publish, to go to Light Tracer…)

Can u help me understand your issue a bit better pls? What exactly do you mean?

I’m not sure if @BKE is experiencing the same issue, but personally, I find it really annoying that the Items panel keeps hiding automatically whenever I open a project. I prefer to have both panels visible at all times.