Speech Bubble is not the one getting previewed!

Hello There! The "Speech Bubble" feature getting listed on the left hand panel of the Greenshot Editor is entirely different from the one getting actually impressioned as an Output. Please note that the left panel suggests the "Speech Bubble" to be very much elliptical in shape, whereas the one getting portrayed as an end Output is indeed a Rounded rectangle & not an elliptical type! Therefore, there must be sync. in between the preview & the end Output. Personally, I would like to see an elliptical shape getting evident as an end Output. Therefore, Please pay a heed to this humble request i.e. an Elliptical Speech Bubble. Thank you.