Hi Amarjit,
Greetings from Syncfusion support.
We have analyzed the reported problem and we have confirmed it as a bug and logged the defect report “MultiSelection is not working in Mac OS” for the same. Thank you for taking the time to report this issue and helping us improve our product. At Syncfusion, we are committed to fixing all validated defects (subject to technological feasibility and Product Development Life Cycle ) and including the defect fix in our weekly patch release which is expected to be rolled out on or before mid of October 2020.
You can now track the current status of your request, review the proposed resolution timeline, and contact us for any further inquiries through this link.
Till then we appreciate your patience.
Regards,
Jeevakanth SP.