Mouse click on the cell not exactly on my site I checked demo it works perfect but on my site, i cant click to the cell exactly See the video: https://youtu.be/MzZ63tB5fPk
It looks like it might be affected by some global CSS. Can you try to turn the CSS off temporarily to see if it causes the problem?
i found the reason why, because parent tag has a style with value: "margin-top: 50", change to: "padding-top:50" and it worked perfect ^_^