SDSaranya Dhayalan Syncfusion Team December 10, 2019 05:11 AM
Thank you for contacting Synfusion support,
We have checked your reported issue. We are not able to reproduce it in our end. Attached screenshot issue (cannot read property 'getboundingclientrect' of null.setMouseXY) is not related to dropdownlist releated. Please provide the below information to proceed further. So that it will be very helpful for us to check in our end and provide you a better solution.
We have created the sample based on your scenario. Please find the below sample link: