In one session my days spent playing went from 93 to the amount you can see here. And before joining at all it was only around 4-6 hours, not 93 days. This also happened to a friend in my party.
Also, I don't remember playing 400+ games. And it's ruined my win ratio :/ (although tbh it was only 30% before because every time I play I just have my entire team mage spam and I can't votekick with the odd one sensible person because they removed it, but that's a different post by itself).
summary: time spent playing and possible matches played has randomly jumped for an unknown reason. Please fix.
update: image no longer works.