Applying existing keywords does not work.

I have tried to apply existing keywords to a document, but nothing happens.
Version: 2.9.9.11 Beta (1078454) 64-bit

Did you select one or more documents in the Binder before opening the project keywords window and applying?

When I do this in RC11 64-bit noHDPI, the selected keyword is applied to all of the selected documents.

Here are the documents selected first:
[attachment=0]keywords-selecteddocs.jpg[/attachment]

Works for me with Drag and drop.