The Paris bike share system became completely dysfunctional last year when they changed the contractor. It's a huge embarrassment for the city, because it had worked well before. I hope they fix it.
Oh boy, the Velov' of Lyon (which I believe were the very first iteration of these bike share systems) are completely broken since they changed them. Now you can't get one from a station without the app, and the app doesn't work for most people. It's a shit show.