I tried this using versions 2.2.1 on Ubuntu 8.04 and Arch 2007.08-2 and version 2.2.2 on Arch 2007.08-2. The problem was the same for all environments.
The problem is when drawing a barcode and trying to select a key instead of a literal. Both radio buttons are selected, and it does not allow you to select a key.
To reproduce this bug:
1. Start glabels.
2. Start a new label using the...
2008-05-06 23:25:33 UTC in gLabels