We found issue with Daypilot. Because of this issue, we have problems with performances(modal loading issue).
On first load we got: `onBeforeCellRender`, and that's okay. But after that we trigger click function, and if we have any state inside `onBeforeCellRender` he will be recalled again.
This causing a lot of problem to us, because modal was opening very slow in that case. A lot of rendering from onBeforeCellRender , which is not necessary I believe.
If we don't have any state inside `onCellClicked` function, everything will be fine. `onBeforeCellRender` will not be called.
Please take a look a video.