+1 on that, no smooth spinners... though fixable easily by just flashing smooth spinners .zip found somewhere in the "Themes" section.
It's like that because systemUI an framework are modded, and YahooMail uses some system files, so no fix for that...
Standard icon from ICS builds, it's how it's supposed to be.
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And now the bug I managed to find, a really small one though.
When you type in a part of a number in the dialer ( i.e 471 for example, like in my screenshot ) the system filters out phone numbers that have 471 in them. When you click the button to show which those numbers are a popup appears that should show those in grey and 471 highlighted in white. The issue is the popup background is also grey so you can only see 471 highlighted, and nothing else.
Screenshots attached :
( Master of photoshop but still uses paint
)