Issue positioning in Firefox is wrong.

[michtio]

There is an issue in Firefox with the positioning of the datepicker:

https://bloom.prelive.dasmedia.be/astrologie/ascendant

If you scroll down you'll see a date field, where the datepicker is added to. Everything works as expected, but not in Firefox.

Click the date field and scroll up, you'll see the datepicker itself floating as if it has a parallax effect... which is weird behaviour and shouldn't occur.

[chiragnsuthar]

same issue facing date picker position not changed it's sticky position showing top position not changed while scrolling.