The window cannot be automatically filled after being unpined

[bouyeijiang]

[ZSYMAX]

@wieslawsoltes
I'm trying to solve this problem，maybe a bad solution.

In ProportionalStackPanel.cs,i have changed the AssignProportions method,this is my code

    Dictionary<Control, double> lastProportion = new Dictionary<Control, double>();
    private void AssignProportions(IList<Control?> children)
    {
        var assignedProportion = 0.0;
        var unassignedProportions = 0;

        #region My change

        double unassign = 0.0;
        foreach (var control in children)
        {
            if (control.DataContext is IProportionalDock pdock && pdock.VisibleDockables != null)
            {
                // if all tooldocks has no ActiveDockable,then set the proportion of the parent ProportionalStackPanel to 0;
                var toolDocks = pdock.VisibleDockables.OfType<IToolDock>();
                if (toolDocks.All(x => x.ActiveDockable == null))
                {
                    var proportion = ProportionalStackPanelSplitter.GetProportion(control);
                    ProportionalStackPanelSplitter.SetProportion(control, 0);
                    unassign += proportion;

                    //record the last proportion
                    lastProportion[control] = proportion;
                }
                else
                {
                    if (lastProportion.TryGetValue(control, out var value))
                    {
                        ProportionalStackPanelSplitter.SetProportion(control, value);
                    }
                }
            }
        }
        if (unassign > 0)
        {
            //if has the document dock,add the remaining proportion to the document dock
            var documentDock = children.OfType<DocumentDockControl>().FirstOrDefault();
            if (documentDock != null)
            {
                var p = ProportionalStackPanelSplitter.GetProportion(documentDock);
                p += unassign;
                ProportionalStackPanelSplitter.SetProportion(documentDock, p);
            }
        }
        #endregion


        foreach (var control in children)
        {
            if (control is { } and not ProportionalStackPanelSplitter)
            {
                var proportion = ProportionalStackPanelSplitter.GetProportion(control);

                if (double.IsNaN(proportion))
                {
                    unassignedProportions++;
                }
                else
                {
                    assignedProportion += proportion;
                }
            }
        }

        if (unassignedProportions > 0)
        {
            var toAssign = assignedProportion;
            foreach (var control in children.Where(c => c is { } && double.IsNaN(ProportionalStackPanelSplitter.GetProportion(c))))
            {
                if (control is { } and not ProportionalStackPanelSplitter)
                {
                    var proportion = (1.0 - toAssign) / unassignedProportions;
                    ProportionalStackPanelSplitter.SetProportion(control, proportion);
                    assignedProportion += (1.0 - toAssign) / unassignedProportions;
                }
            }
        }

        if (assignedProportion < 1)
        {
            var numChildren = (double)children.Count(c => c is not ProportionalStackPanelSplitter);

            var toAdd = (1.0 - assignedProportion) / numChildren;

            foreach (var child in children.Where(c => c is not ProportionalStackPanelSplitter))
            {
                if (child is { })
                {
                    var proportion = ProportionalStackPanelSplitter.GetProportion(child) + toAdd;
                    ProportionalStackPanelSplitter.SetProportion(child, proportion);
                }
            }
        }
        else if (assignedProportion > 1)
        {
            var numChildren = (double)children.Count(c => c is not ProportionalStackPanelSplitter);

            var toRemove = (assignedProportion - 1.0) / numChildren;

            foreach (var child in children.Where(c => c is not ProportionalStackPanelSplitter))
            {
                if (child is { })
                {
                    var proportion = ProportionalStackPanelSplitter.GetProportion(child) - toRemove;
                    ProportionalStackPanelSplitter.SetProportion(child, proportion);
                }
            }
        }
    }

i only add some code in region

[wieslawsoltes]

It's known issue, didn't yet found a working solution.

[BAndysc]

#324