Netbeans has a nice set of keyboard shortcuts, but unfortunately, I can't seem to get all of them to work. Specifically, there's a keyboard shortcut for converting selected text to lowercase: Ctrl+U L. However, no matter how many times I try this (or variations on it), nothing happens I just get a 'ding' sound (it used to be that nothing happened). I check the Keymap option on Netbeans, and it shows that this is still the shortcut mapped to Ctrl+U L:
What am I doing wrong? How can I use this keyboard shortcut?
Note that Ctrl+; or Ctrl+Shift+; works just fine, among many other shortcuts.
To activate this shortcut you have to hit Ctrl+U then release Ctrl and then hit L.