Selecting predecessor nodes and edges with the “select elements” tool is a multi step process.
I made a “how to select nodes and edges” video to help Users.
These are the steps used to highlight nodes and edges. Are they the most efficient?
I think step 1.3. "Raise Selection" is unnecessary and selecting predecessor edges can be achieved with less steps:
For the second step, make sure none of the options on tab "General" are active. Additionally, option "Use These Criteria" may only be active for tab "Edges".
You are correct, the "Raise Selection" step isn't necessary. It's a preference to have the selected edges on top.
For completeness sake, I would like to mention "File" -> "Preferences", tab "Display", option "Draw Selected Elements On Top". With that setting enabled, yEd will automatically raise selected elements and lower them once again when they are no longer selected.