Yes. I've sniffed, I've poked, monitored... It simply seems like it only connects (air) ONCE per power cycle. It does seem capable (but very unreliable) when it comes to a DHCP lease... On my network, the tub is a reservation to make it as easy/protected as possible. If the air connection is maintained perfectly, I don't lose it... ever (still testing). For my site, it's a bit of a bear, I push updates, and have a half dozen APs for throughput AND coverage, but I've locked the tub to one AP which is counter to the network design.
Hope this helps,
(edited for clarity... Yes, once air interface gone, its gone 100% and needs power cycle or push button on side to initiate a full reset - clearing everything. I suggest the power cycle, she'll come right back.)