Yoshida said it's on purpose so you focus or something. The functionality is there, they just currently have it disabled.
Hahaha! I like the guy, and I generally believe most of his excuses. This one however, is complete and utter malarky. SE really needs to talk to some other developers, maybe Trion and Bizzard, to get some help with their ancient server technology. I'm not being mean. It's going to be necessary to have a fully polished game without silly restrictions like this.
If it's not a technological issue, it needs to be lifted. I need to be able to communicate with people in /tell while I'm in an instance. Edited, Sep 3rd 2013 9:30pm by Transmigration