I don't agree that it is a bug but a heightened security measure that SE has purposefully implemented. On the up side to this method, if your account is compromised and your character is active in game, they can never log into your character. In XI, they could get access to your account, kick you out in the middle of your own session, then change your information so that you cannot get back in fast enough to counteract the cyber assault. This way, the compromiser cannot access your account right away and change all of your information. It's a bit of a moot point though as all the compromiser has to do is wait for you to log off.
Unfortunately, the downside to it is what people have been noticing. Increased times to relogging when kicked from the server. Considering that this "security measure" ends up being moot anyways, as I've addressed above, they should change it back to kicking your character from the server if someone tries to log in.
The downside to removing this "security measure" is that the character can be compromised more easily. The upside is there is a security token to keep such a thing from happening, which brings up a whole different topic.
It may be a bit depressing to think that it's not a bug, I know, but considering an official forum moderator moved it from the bugs forum gives me the inkling that it's a purposeful security measure. I don't know what is required to be an official forum moderator but I'm leaning towards the minimum requirements being that you are on a localization team and may be privy to such information. It's a blind guess though.
The good news is that absolutely no one is arguing that this method is somehow better or should maintain it's continued existence in the game. Even potential staff, as noted from the moderator's post, find it incredibly frustrating. Hopefully by having it in GENERAL DISCUSSION it will be seen as a design flaw that is having an adverse effect on all players rather than an isolated incident that would have to be addressed client side first then escalated later to a design flaw.