We make every effort to test reasonably, we're a small company and as you know every new release sometimes takes a few days to hammer out some minor issues.
We support
vB going back into the 2 series; this mean making it work with v2, v3.0, v3.5/3.6 and 3.7. Each iteration requires its own set of code given the changes and that we can't count on all our customers running the latest.
If we were to take the policy that we only supported the current release of
vB, we might have a much easier go of it; but we try to avoid having to force people to update their forums to have a current gallery.