Doubled Entries in Combo Boxes
I don't know how to reproduce this exactly, but after some time I get doubled entries in the combo boxes which get filles from items on the file system, like ols.ui.colorscheme-.cfg and ols.profile-.cfg. See attached screenshots.
I can get rid of them by deleting the felix-cache directory, but after some time they are back.

The only way I could reproduce this was by moving/renaming the installation directory of the client. That caused the platform to install all configuration files.
Did you (accidentally) move/rename the installation directory?
Yes, this might have been the case.
Ok; that's at least an explanation for the behaviour you see. I'll see what I can do to prevent this...
It appears that the latest specification (v1.4) for ConfigurationAdmin lets us to listen to "location changed" events, which should allow this problem to be circumvented/solved. The current client still uses the "old" version (v1.3), which does not provide any support for this.
Postponing this issue after the 0.9.7 release.