Something new to report about this bug:
when the reservation did actually expire, I got no notice. Luckily I spotted it and re-reserved.
Edit: OK here's a funny one. I got one that expired and I forgot what the bloody city was. Couldn't find it, so I was like OK ah well lost that.
Then I JUST now got a notice that it expired (when it already expired ages ago) and I was able to find the city again. lol'd at that one.