CM 13 Snapshot wifi disconnection

I just flashed CM 13 snapshot and I am facing wifi disconnection problem. It works on my home wifi properly but on my library wifi it never connects even if enter correct password it says connecting for few secs and then shows saved thats it. Some times it connects out of no where but keeps on disconnecting and connecting again and again ??

Please help I am having nightmares because of this stupid problem.

from xda-developers http://ift.tt/1LUzGTd
via IFTTT