I agree, it's a bit unprofessional. Fixing this requires modifying the Windows binary with a tool like ResEdit, and we do all our development on Linux (for now). I think it's pretty apparent that going forward, we need to focus on the Windows experience because that's where most of our users are.

However, I think the word you want is polish, not "effort." We have poured many thousands of man-hours into Sia, but first and foremost we have focused on the core technology, not the look and feel of the application. Rest assured, this will be our top priority for the next few weeks.