I have a calendar parent view (by calendar module) with calendar display attachment (which provides a calendar display for events), and with a custom display attachment (which provides a list of them below the calendar).

Sexy option is turned on on every filter, filters are similar in each instance.
If only one display attached to the parent view - everything is ok.
If both - filters degrade to standart html multiple select lists.

No JS errors, nothing, just does not work.

How to fix?