Source Control Merge Wizard with no target branch

Question

This is in Visual Studio 15 Preview 5. I have attached an image of what happens below:

For some reason, the combobox where you chose target branch is non-existing. Why? Can I fix this somehow or do I have to do all operations with commands?

Answer 1

You should be able to resize the window by pulling in the bottom edge of the dialog.

Still strange that it ended up being so small.