iOS 26 - Touch in context menu preview not working anymore

Hello,

I am testing an existing app on iOS 26. It hast an UITableViewController that shows a custom context menu preview using previewForHighlightingContextMenuWithConfiguration and providing an UITargetedPreview. Something along the lines like this (shortened):

    public override func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
        guard let indexPath = configuration.identifier as? NSIndexPath
        else { return nil }

        let previewTableViewCell = self.getCell(for: indexPath)
        var cellHeight = self.getCellHeight(for: indexPath, with: maxTextWidth)

        // Use the contentView of the UITableViewCell as a preview view
        let previewMessageView = previewTableViewCell.contentView
        previewMessageView.frame = CGRect(x: 0, y: 0, width: maxPreviewWidth, height: cellHeight)
        previewMessageView.layer.masksToBounds = true

        let accessoryView = ...
        let totalAccessoryFrameHeight = accessoryView.frame.maxY - cellHeight

        var containerView = UIView(frame: .init(x: 0, y: 0, width: Int(maxPreviewWidth), height: Int(cellHeight + totalAccessoryFrameHeight)))
        containerView.backgroundColor = .clear
        containerView.addSubview(previewMessageView)
        containerView.addSubview(accessoryView)

        // Create a preview target which allows us to have a transparent background
        let previewTarget = UIPreviewTarget(container: tableView, center: ...)
        let previewParameter = UIPreviewParameters()

        // Remove the background and the drop shadow from our custom preview view
        previewParameter.backgroundColor = .clear
        previewParameter.shadowPath = UIBezierPath()

        return UITargetedPreview(view: containerView, parameters: previewParameter, target: previewTarget)
    }

On iOS 18 and below this works fine and buttons that are included in the accessoryView are tapable by the user. Now on iOS 26 the preview is shown correct (although it has a bit weird shadow animation), but tapping a button of the accessoryView now closes the context menu, without triggering the touchUpInside event anymore.

For me it feels like an unintended change in behavior, but maybe I am missing something?

Filed FB18644353