Thank you for this report, Shivam! I experience similar behavior in both SmarterMail 15 and 16. Because this is not directly related to the BETA release of SmarterMail 16.x, and so it does no get lost when we close down the BETA threads shortly down the road, I'm going to move this thread out of the SmarterMail 16.x BETA category and into the standard SmarterMail category.
Thank you!