Is it a lagging after the new update?

Till 8th april it was good, but on 9th no matter how much I studied, it said 0 and the time was added to the 8th so weekly total was fine but for someone who prefers daily total, it was a mess. I added some time manually at 6 am, still same thing happened. On 10th I tried again by adding 10 min manually, and now its all messed up. The time from 9th is shown in 10, from 8th in 9th and so on....