I have 2 galleries in my powerapp.
Items property of the Gallery4 which act as a filter refiners is populated using formula as per the screenshot below



Search result Gallery3_1 is using below formula

Whenever I use filters with checkboxes selected, the search results shows fine without any issues. However once I start unchecking the checkbox, search results doesn't gets refreshed and it doesn't display properly. Any idea where i am going wrong ?