[FIXED] [#1617] [4.8.0] Button overflow menu - set icon class returns error

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Hello support team,
when the window is wide enough to display the button, everything works well. However, if the window is shrunk, I get an error this.getIconCls is not a function when clicking an overflow menu item:

@{
    Layout = null;
    var X = Html.X();
}

@(Html.X().ResourceManager())

@(
    X.Window().Width(200).Height(180).DockedItems(
        X.Toolbar()
            .Border(false)
            .Dock(Dock.Top)
            .EnableOverflow(true)
            .Items(
                X.ButtonGroup()
                    .Title("Remove")
                    .Items(
                        X.Button()
                        .Text("Active")
                        .OverflowText("Active")
                        .IconCls("#BulletCross")
                        .Scale(ButtonScale.Large)
                        .EnableToggle(true)
                        .OnClientClick("this.setIconCls(this.pressed ? '#BulletTick' : '#BulletCross');")
                    )
            )
    )                                                                                                                                          
)                                                                                                                                              )

The same error keeps occurring even if the window is enlarged to the original size.

An overflow menu item icon should correspond with the button icon.

Is there any workaround available? Thank you.

Dan