Date Picker disappears

Hi,
Something really strange is happening to a site I am developing. I have 2 pages which include a date picker used to filter some data from a database. Now, WIX sometimes shows the date picker and sometimes it doesn’t. This happens both in developer mode and in preview mode. The pattern of showing / hiding seems to be totally random, any idea what could explain it?
Many thanks for your help

It’s a bug. See here:

https://www.wix.com/corvid/forum/community-discussion/date-picker-randomly-disappears-it-s-still-there-though