When entering transactions, I have noticed that the "Transaction type" field at the bottom left of the screen in the transaction entry area is NOT case-sensitive.
I also notice that rotating the small arrow to the left of the word "Transaction" so as to hide/unhide the transaction entry area results in screen corruption of the bottom portion of that area.
However, tabbing in Windows using Alt+tab to switch to another program results in the corruption going away and the area being re-painted. Though, ass far as I can determine, the other program's screen has to be in the same screen area as the corrupted portion of the iCash screen.