No matter how large I make the window, this is all I can see of warnings:
How can I see the full text of the warning at the place it appears?
I could hover the mouse over the warning as it appears in the left pane and, after waiting long enough, a tooltip appears with the full text, but I find this very awkward... Is this the only way?
The Issue Navigator is a compact representation. If you really want all the details, you can view the build transcript:
Double clicking on a message will then reveal the source location in the editor.