problem with balancing mutual fund account

[Bill Gribble]

Teddy Odum writes:
> Each month I purchase $400 dollars worth of mutual fund.  Each time I try
> to enter these values, the first purchase balances out.  On the second
> entry, a pop up asks if I want to "balance it manually," "let gnucash
> add an adjusting split" etc.  I pick "balance it manually" because
> gnucash has added 10 cents to the cash account.  I don't understand
> this accounting principal, maybe. The 10 cents was not there before.
> (Or is it a bug in the program.) 

I can reproduce this on my system.  As far as I can tell, it's a bug;
I'm just not sure exactly where.  

b.g.