pgt: It would seem obvious, doesn't it? Check out dailygammon dot com ...

pgt: It has been programmed that way in case the losing player would want to use the cube to double, even though they are stuck on the bar... I guess it could possibly happen but only extremely rarely, as in nearly never. A bit of a programming cop-out, I guess.

moistfinger: Your idea is correct. I HAVE doubled from the bar before, not often, but not never either. It is a good play in some situations.
I wouldn't want this option to be taken away...

Note that if you CANNOT double (because the opponent has the cube, or it's post-crawford), it DOES Autopass.
So it is not an be-lazy-and-save-some-code-problem, in the contrary, it is doing it even more detailed and correct.

Aganju: I agree. And I’ve doubled from the bar many a time. I’ve also had doubles at the bar many a time, but that’s a different story ;)