No, it didn't. With version 0.3.0 it was possible to click "generate address from seed" with an empty seed (this is still possible in 0.3.1, too), which results in the address I posted, try it yourself. And some guys did this, because there were high transaction on this address. And if you then entered the right seed after it, but didn't click "generate address from seed" again, it was possible to click "register", but the address was not updated (this was fixed in 0.3.1), resulting in an address for the empty seed, which I just posted. I guess this was meant by the release note "Fixed an issue with address generation after seed modification".
This is still an error on the part of the user though. If the seed is empty you shouldn't be clicking on generate.
Yeah, but they are just users

The client should not allow to register an address created with a weak or empty seed and this is already fixed. Maybe additionally would be good to check the seed when the generate address button is pressed and not allow weak seeds at all, tested with the same check that is done with the register button.
But I think too, this was not a serious problem, the user has to do a specific sequence of wrong steps, maybe only 35k WAVES are lost, and already fixed in 0.3.1. But where do I write to when I've found a serious bug? I guess adding a github issue wouldn't be a good idea.