I just installed 2.50.12 for x64. It's much faster, which is great as that's why I upgraded the GDC, but for some reason it's making a menu bar at the bottom that replicates the toolbar at the top of the application.
Here is what the application look like in 2.11:
And here is 2.50.12:
Here is the property set of the second MenuAction item (which does Delete):
Any thoughts on what would cause this, and how to eliminate the problem?