スリープ復帰するとスリープ中の時間がアクティブなタブに加算されることがあるため、集計が正確ではない。

Time is sometimes not correct. For example, the screen time measured by the MacOS screen time is less than the mind the time screen time by about 2 hours.

[EDIT]
Seems that the timer counts the time even when the computer is in sleep mode sometimes. Please fix this!

Could be a bit more customizable too.

> Keeps counting time even when window is out of focus

> Keeps counting when my computer goes into sleep mode. Please fix it.

It's still true nowadays :-(