I'm just after trawling through the most recent 80 pages of the bugtracker for WoTLK. Out of approximately 2000 bug reports only 2 fixes to class spells were made.
There are many reports on the bug tracker listing class spells as not working correctly. In some cases these spells have been working incorrectly for years and still are awaiting a fix.
Could we please have just a tiny bit of a focus on fixing WoTLK class spells? In the past couple of months hundreds of NPCs and quest related bugs have been corrected but Class specific spells that affect how a character plays in both PvE and PvP have been left in a broken state for far too long.