Removed vx nano and rebooted.
Reproduced like this:
- start UR.
- open intro file
- DIALOG: [note:file is read only], click OK
- primary click (right-click) in Item Title field
result below:
http://hyperslug.s3.amazonaws.com/URMouseProb.gif
hang on, trying something else.
//edit: oh yes, red circle marks where I clicked