Bug: TimePicker and DateTimePicker from '@atlaskit/datetime-picker' may affect performance of entire form

We use TimePicker and DateTimePicker inside @atlaskit/form. I’ve encountered big performance drop in other inputs in form when using TimePicker or DateTimePicker where I don’t set the “timeFormat” parameter at all. Using Chrome DevTools I was able to debug this performance drop down to “formatTime” function from Babel which takes around 150 ms to finish on any input value change in the form. This is not the issue when I set the “timeFormat” parameter in TimePicker to any proper value but when I don’t set “timeFormat” at all the problem occurs. I’m not sure if its a bug in Babel or in TimePicker. Please examine this issue further.
Best regards.