I must mention that this build is the same OS build like the BETA version out there, but a stock version. everything is ok, except the bug that all of us found
Picture live tile does not resize to the biggest if once resized
Some of the tiles have custom icons like the music+video tile, and maps tile, if those are resized to the little tiles it looks like they are stretched
The fonts are not ok, but i will share with you the original fonts of my windows phone 7.5 device which you can then add in the windows folder and reset the device and it looks then like before on WP 7.5.
The email tile does not show incoming email text, it shows only the number of emails (but it should display some text like the messages tile)
The small tiles have names on them, but should not have like WP8
Music, People, and Me tile dont change imidietly the accent, you must manually resize them to get the changed accent color.
The Marketplace (Store) tile sometimes have a windows logo on it, sometimes not.
Some apps like Amazing weather dont update the accent color too, you must enter the app to update the color (but thats a bug in the app, not in 7.8)
Apps like Nokia Navigation work, i dont know for Nokia Counter app because we have not added the driver for them.
Another bug in every 7.10.8835 build is the the letters on the applist dont have squares around them (this bug me a lot, it looks not good) if somebody know how to fix it send me an pm or leave an hint here in the comments.
The search button on the applist is invisible on the white theme, on the black theme it is there!