Hello,   I'm using an version 2019 of the software and I'm facing a problem. The nodes only appears on the screen when they are selected. This is a problem, because when I create a node, it get lost on the workspace, invisible on the screen (When I was creating the node, I took care to click "fit model").   I realized the folowing test: I create two nodes (000) and (010), and selected "fit model". After that I selected "lines">"linear nodes">"node list" and holding Shif