To ensure layout syncs correctly, you need to explicitly trigger layout updates when the TableView or HorizontalHeaderView resizes.

Fix: Add onWidthChanged: tableView.forceLayout() in both the TableView and the HorizontalHeaderView.

🔧 Updated code:

TableView {
    id: tableView

    columnWidthProvider: function (column) {
        // Your width logic
    }

    onWidthChanged: tableView.forceLayout()
}

HorizontalHeaderView {
    id: header
    syncView: tableView

    onWidthChanged: tableView.forceLayout()
}

✅ Even in HorizontalHeaderView, you call **tableView.forceLayout()**, not header.forceLayout().

🧠 Why this works

• columnWidthProvider often runs before tableView.width is fully initialized or updated.
• forceLayout() triggers Qt to re-run layout and width calculations with correct sizing.
• syncView can now properly sync header and table widths based on the final layout pass.

✅ Result

Now the header and table stay in perfect sync, even when:

• Resizing the window
• Stretching a specific column to take remaining space
• Changing content dynamically