Hi Irroutes,
Thanks for buying the game and I'm glad you're having fun with it!
Sleeping: What I think you've got going on is energy levels. When inmates finish their sleep schedule, but don't have full energy, they'll often opt sleep through the free time, until they're given something else to do. Try sending them to bed a little earlier to combat this. If your dudes are totally energised and it's STILL happening, let us know.
Lockdown: As with the Introversion PC version, this is a design choice. Because lock down is a punishment and designed to be used in short bursts, it disrupts the normal prisoner activities.
The other things may be bugs but I'd need a little more info to be able to check them out. Here's a bug reporting guide that one of our dev team wrote in order to give you some pointers, if you're interested. You can complete a bug report here.
Hope that's all helpful!
Regards,
Nat D11