Isn't that a feature, rather than a bug? .....
I only saw it reported as a problem with after the intoduction of the UL material*
but it seems a pain to have to rotate the UL variant stove every time the wind changes direction so I would count it as at least a nuisance if not a bug... Surely better to design around holes around, even if some other change required but thenl is OK on triangle, ...
(when I used my ancient late eighties non-UL base in the mountains I never bothered and used to sometimes deliberately aim the holes out of the fierce mountain wind to try to tame the flame more than the simmer ring..)
*
http://trangia.se/en/faq/see Section entitled 'My vessels or windshield has melted, how could this happen?'
I came across the 'ULs 'new' feature' (years ago) on the site of a disgruntled Australian who was unimpressed by this new property of the UL versions compared to his old models (with photo of melted base).
This is a different (less disgruntled, despite a more alarming detailed description of event, person) who suffered the same sort of thing:
see post by rifraf
]http://www.bicycles.net.au/forums/viewtopic.php?f=2&t=42497&start=200]see post by rifraf
NB Tatonka make a 25 clone with a stainless base (and pans and lid...and burner).
EDITed to tidy links