Lotus notes has many usability issues (or ‘features’ as they’re called). One of the most annoying is below:
Accidentally click ‘request more details’ in Lotus Notes? Bad luck, as you now have to send the request.
Here are the options presented to you if you try and exit.
(Note that the dialog box appears when you click the ‘x’ in the top corner to close the window)
None of these options allow you to exit without sending the request for more information. Maybe they should have actually tested with users?