I have already submitted a support ticket for the said issue but I am hoping to have some help from the community in case you have a work around for this.
Timepicker component is not usable at all when there is a grid component on the same page. The issue can only be encountered in IE Browsers.
To reproduce the issue, open the stackblitz link below in IE. Try selecting timepicker values.
https://stackblitz.com/edit/angular-65hvyd?file=src%2Fapp%2Fapp.component.ts
Thanks in advance!