When you say it disappears, do you mean that it is there when you first start CA and then after some time it is no longer there? You are running Ice Cream Sandwich, right?
If you don't mind, I would like to suggest a solution. A gesture to
bring up the menu, just like 's' will bring up the keyboard.
Haggen
I would like to see an actual Apple 2 keyboard layout for tablets...
Sorry, it is soccer season. :-) I took some time to read up on the slightly different way that the HTC one phones are handling menu buttons. This shouldn't be preventing the menu from being accessed however. It should just look odd with a lot of the HTC screen real estate burned up for a single menu button. I have yet to travel to best buy to see first hand the result. I'll try to fit that in this week. If I can not figure it out I may just take your suggestion of adding a new gesture to get the menu open.
Garnet
I did some reading on this and it is hard to find other other cases of this happening with the one v. Most peoples complaints are more related to what seems to be confusion over when the menu button should appear. I found the one v in future shop but it was a solid plastic dummy model so I couldn't try it. I wanted to try holding down the recent apps button which some users said made the menu button appear. I assume you've already tried this. There were a few other apps mentioned that have similar problems for at least one user.
I'll check the bell phone store as well as they sometimes have other working models to play with and also have wifi to download apps.
Garnet
Mystery solved. That will probably help you out on a lot of other apps as well. Cheers. :-)