Summoning a Retainer locks my character.
In Ul'dah Market Wards "Mason's Row" I tried Summoning one of my retainers from a different spot within that same row. The game would lock up (I could not move or open menus at all). The retainer also would not appear. I have to force shut down the game to remove the problem.
The retainer is now in "The Dunes", and I can access her via the bell in the Adventurer's Guild but if I try to summon her in that row it continuously locks up my game.
Just wanted to write a post so the dev team could look into it.