Space Between Sections in UITableview

I think you can solve this by adjusting the footer view height to its min: in Storyboard or XIB. enter image description here

I don't know what you have written in your code for footer height. Sorry if I am wrong.

Possible duplicate of Hide footer view in UITableView

On iOS 15 you may want to reduce the sectionHeaderTopPadding

if #available(iOS 15.0, *) {
    tableView.sectionHeaderTopPadding = 0
}

Did you try override this function:

override func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
    return .leastNormalMagnitude
}

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