Default view format / fleximage

I’ve been having a problem of late with view formats. I am using the
FlexImage plugin to provide thumbnailing which adds its own view

I would usually access a my resource via


Since photo is my model I would normally see the rendered
instead I am getting

I am just wondering, is the view that is used defaulted to the first
alphabetically. Its very confusing I assumed that the format is
defaulted to html somewhere unless otherwise specified. If that is the
case in development I am getting the html view displayed, but in
production it defaults to jpg which is crazy. It seems to inconsistently
switch between the two.

Does this ring any bells with anyone?