I second that, its been happening too often for too long. The delivery of the app can take over a day for our apps sometimes leading to negative customer feedback that is affecting reputation of a growing business.
Apple fix this!
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Still facing this with 13.2.1
Not true, I have a group table view in iOS 15.2 and it is affected, possibly because I have custom section headers.
tableView.tableHeaderView = .init(frame: .init(x: 0, y: 0, width: 0, height: CGFloat.leastNonzeroMagnitude)) solves it per https://medium.com/@GalvinLi/fix-the-table-header-gap-in-ios-15-197debb92608