Can add Nodes to Monitor View

Describe the bug
When in the Live Monitor tab, you can click on the background to add nodes just like in the editor view. Doesn't do much, but once a node is added it cant be moved and it will disappear as soon as a new tree is loaded in.

To Reproduce
Go to the monitor tab, monitor any BT, and double click the background to add a node.

Expected behavior
Nothing, shouldn't be possible to be edit trees in monitor tab