OMG I have tried the bug, it really works.
Some players exposed that there is an easy way to change character model in the current WOW version without using any tools. We find the way is workable after verification. The detailed steps are as follows:
Create a new character and choose the race, gender and appearance you like. After that, enter the game world with the new Level1 character and then logout to return to the character list. Left-click to select the high-level character that you want to make a change, and then move your mouse over the new created character.
On this screen, press Enter key and left click on the new character simultaneously. You can also left click on the new character and then release the mouse button at the time of pressing Enter key. If you seize the right opportunity and have good fortune, your high-level character will be changed into the new character model. With this method, Diablohu has created a human Druid. Do you want to change your character gender? Come try it!