Tank Graph broken?

[Davide DB]

Opening Subsurface I found the last added dive with a strange tank bar.
It shows a phantom "air cylinder".
I have two correct gas change events. which correspond to my tanks in
the equipment list.
I tried to investigate the XML file with no luck. i see only two gas
changes which seems correct to me.

My only bet is the cylinder number... This is the dive where I
discovered this bug:

http://trac.subsurface-divelog.org/ticket/832

I originally copied a set of 4 tanks from another dive and then I removed one.

What's wrong in the attached dive?

Thank you in advance

-- 
Davide
https://vimeo.com/bocio/videos
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