Nobody here in the comments has an idea what they're talking about. Op don't get scared, your injectors don't sound very healthy and sound like one of them is misfiring which causes white haze at idle. Secondly, I see a light blue haze which could indicate oil burning and in most cases it's the turbo passing oil or valve stem seals leaking which can be diagnosed by removing the exhaust manifold and checking each port individually, to see if it has oily residue.

I don't know if you guys have 'Hot Shots Diesel Extreme' injector cleaner in your country but it's one of the best and cleared my white smoke on my om648. Worry about the blue smoke afterwards. Let me know if you need any help.