I think there is no need to autoclave TAE buffer If you are using Ultra pure or DI water. simply you can dissolve tris base in the DI water ,followed by addition of Glacial acetic acid and lastly EDTA . This is how I prepare my solution and it works well.

You don't need to autoclave the 50X TAE Buffer, since high temperature would probably destruct the chemical components of it. You just simply add 242 g tris base and 18.61 g EDTA in ~700 ml Sterile ddH2O and stir it until completely dissolved, and then add 57.1 ml glacial acetic acid gradually, then adjust the volume up to 1L with ddH2O. That is 1L recipe of 50X TAE buffer.

Thank you!