I dont know if all this is repost becuz i dont have still the search thingy. Im new here. If its repost im sorry.
So if you are rogue u can go to CoS in stealth and u will need vanish to pass the 3rd boss in the room. After u pass u can go to the mal ganis chest and open it and loot it without being saved to the instance. U can do it easier when u pass once and use WPe pro to set up a teleport place near mal ganis and just porting there and loot the chest.
The other thingy is in Ulduar. U can kill easily Razor, the robot , Freya and Ignis (other bosses cannot be killed becuz ur tank disapear). You have to go near Ignis, Freya, Razor and robot and set up new teleport location and go back to the tanks. Go into the big one and just teleport near Freya for example. Then go on the back seat and attack the boss. IF you take too much HP just change front and rear seats 5-6 times fast and ur tank will be on full HP again.Also if u need emblems of valor u can go to freya and arround her u can find 3 or 4 big Trees who drops badges and lots of money. They are easy to kill even in Heroic and u cannot be saved by killing them.
So u can kill even flame levithian solo by that way. u just need more timeits fixed on the newest patches maybe 5-6 days ago. If ur server is not up to date u can do it.
There is another bug with rogues on Trinity Core 2. U have to spec in assassination to get overkill. After that go on stealth and get out of stealth. Press alt + f4 and after u login u will have instant 30% regenerate energy untill u enter BG or instance or u get any loading screen. After that u can easily spec to combat (easier if u have dual spec talent ) and ur energy will regenerate like crazy.
Good luck and i hope that info was helpfull
And sorry for my little bad english :wave: