Rob,
I took your suggestion and was running SD on my 4k LG display with 150% scaling enabled. A decent compromise. At some point I needed to use the cable label tool, but when I clicked on it the cursor would go into label mode, but the label parameter window would not appear. I searched for it, even alt tabbed to no luck. All behavior for the icon seemed normal however I could not set the label parameters due to the window not appearing. I solved the problem, by moving over SD to my laptop 1080 screen and there I got the window back where I was able to plug in parameters and create labels as needed.Not a show stopper but something hopefully you can recreate and fix or let me know how to resolve. Thank you for your quick responses as usual.