First of all, my DZ is a Nordic version with the characters Æ, Ø, Å, Ä and Ö on the hardware keyboard.
On 2.2 before the OTA there was a bug which consistently caused capitalization of Æ, Ø and Å (æøå) when using the hardware keyboard. I don't know about Ä and Ö which are only used in Swedish and not in Danish and Norwegian.
This bug is now fixed using the native keyboard but still present using Scandinavian Keyboard which I have installed from Market. I must admit that I have not contacted the developer to ask if this could be a bug in the app.
Sadly, I have now experienced another bug related to the hardware keyboard [B]after[B] updating to 2.3 - today it happened for the second time.
When typing in Whatsapp and the SMS app (and possibly other apps) using the hardware keyboard pressing "S" will open the SMS app, pressing "G" will open Gmail and pressing "B" will open the built-in browser (not Dolphin HD which is set to default). This is fixed by a reboot (temporarily, it seems). Incidentally, the bug disappeared just now without a reboot while checking if it was also present in Gmail.
The missing pictures bug in HTC's gallery app is still there - still using QuickPic.
Anything that is not listed here - please add to the thread.
As many others I also get the constant Sense restarting thing which is driving me insane!
Also the brightness setting itself to maximum many times.
A handful random reboots. A couple happened with no apps open and doing nothing on the phone - I just happened to notice when it rebooted.
Since monomer888's advise I haven't had another shortcut typing bug happen (as of yet). Thanks!
I'm running software version 2.42.405.2 CL84109