My bad I didn't notice this feature is needed

It actually happens only when clicking buttons too fast. Unfortunately, height animations are handled by the same value animator and when you click another button before the animation ends, the animated line will be frozen in some intermediate state, because the animation was canceled and started a new one. This error can be repeated with all charts of the app. I wanted to fix this but was run out of time :(

Unfortunately pie chart is not finished

It is a minor error

The same thing as the first error posted by Denis only happens when clicking buttons too fast. I described this error on my response to the first error posted by Denis.

My idea was always to show the main grid even when the line was not visible. Now I understand this was a mistake :(

Yes, but it only when the lowest value changed, when the highest value changed Y-axis animation is present.

The same thing as the previous error only happens when clicking buttons too fast. I described this error on my response to the previous error above.

The same thing as the first error posted by Denis only happens when clicking buttons too fast.  I described this error on my response to the first error posted by Denis. This video captured not during an animation but the reason of this error is animation. See video below how I represented this error.

Yes you are right details period is correct, but not zoomed into the selected day.

It is actually not an error. I made it intentionally. If the selected period is less than 2 days It shows what day is selected on the left border. If the selected period is bigger than 2 days it shows the date range. For me looks legal

This also I made intentionally. If you put selector between two line points circles position will be calculated using interpolation formula. Firstly on the panel, I was showing interpolated values too but I disabled this feature because didn't want to show not existing values to users.