The left column of Project Settings covers part of the list. If you hover over the column separator it does show an icon to resize the column, but it doesn’t work.
Using current version .23
This has been a problem throughout the beta – the main options dialogue used to do it as well, but it’s fixed now, I think.
The workaround is that you have to resize the whole dialogue from the right, then you can change the left hand column width. I presume it will be fixed before release.