Fix the issue where tasks from the share board appear through the expanded filter dropdown list during preview. This overlap obstructs proper view of the dropdown options and interferes with selecting filters.

Steps to reproduce

1. Go to the share board.

2. Open the filter dropdown list.

3. Observe how tasks from the share board appear through the dropdown.

Expected behavior

• Dropdown list should fully cover any elements below it.

• Task items should not overlap with the expanded dropdown list.

• The filter options should be fully visible without interference.