Inspired by the way web browsers render the MathML, I decided to change the way Math-o-mir renders exponents and indexes. I moved exponents a bit down and a bit to right. Indexes are also moved to right and up.
The consequence is that equations are a bit narower and a bit longer now. The change is minute.
Here is an example of the old and new (since v1.5) rendering. I hope the new formula looks better to you too.