Timer "In Game" Having problems

Basically, when one of my friends play a game, the timer used to be like 18:45 or 24:22 In game. Now something has happened and I dont know what. I have upgraded the client and everything seems to work properly. Even after changing my pc to the one I have now still stayed normal. But at some time like a week ago the timer no longer shows 14:52 or 45:24 but it now shows things like 1444:15 or 1445:54. Help please :3