Multiplayer: Clickable text in /tellraw not working if Options->Multiplayer->Weblinks are off

Set up a command block with

tellraw @a {text:"Please enter ",extra:[{text:"PIN",color:gold,clickEvent:{action:run_command,value:"/tellraw @p {text:\"Sorry, out of service\"}"}}]}

Options -> Multiplayer Options -> Web Links : OFF

-> Click events of the tellraw command won't do anything