diff --git a/components/tachart/tachartaxis.pas b/components/tachart/tachartaxis.pas
index 2da3a10563..4db6f0d076 100644
--- a/components/tachart/tachartaxis.pas
+++ b/components/tachart/tachartaxis.pas
@@ -321,8 +321,12 @@ end;
 procedure TChartAxisTitle.Assign(Source: TPersistent);
 begin
   if Source is TChartAxisTitle then
-    with TChartAxisTitle(Source) do
-      FCaption := Caption;
+    with TChartAxisTitle(Source) do begin
+      Self.FLabelBrush.Assign(FLabelBrush);
+      Self.FLabelFont.Assign(FLabelFont);
+      Self.FLinkPen.Assign(FLinkPen);
+      Self.FCaption := FCaption;
+    end;
   inherited Assign(Source);
 end;
 
diff --git a/components/tachart/tacustomseries.pas b/components/tachart/tacustomseries.pas
index 78aaa66c5d..273fbae106 100644
--- a/components/tachart/tacustomseries.pas
+++ b/components/tachart/tacustomseries.pas
@@ -77,6 +77,7 @@ type
     function IsRotated: Boolean;
 
   public
+    procedure Assign(Source: TPersistent); override;
     constructor Create(AOwner: TComponent); override;
     destructor Destroy; override;
     function GetNearestPoint(
@@ -136,6 +137,7 @@ type
   protected
     property Styles: TChartStyles read FStyles write SetStyles;
   public
+    procedure Assign(Source: TPersistent); override;
     constructor Create(AOwner: TComponent); override;
     destructor Destroy; override;
 
@@ -224,6 +226,17 @@ begin
   Legend.SetOwner(FChart);
 end;
 
+procedure TCustomChartSeries.Assign(Source: TPersistent);
+begin
+  if Source is TCustomChartSeries then
+    with TCustomChartSeries(Source) do begin
+      Self.FAxisIndexX := FAxisIndexX;
+      Self.FAxisIndexY := FAxisIndexY;
+      Self.Legend := FLegend;
+    end;
+  inherited Assign(Source);
+end;
+
 function TCustomChartSeries.AxisToGraph(
   const APoint: TDoublePoint): TDoublePoint;
 begin
@@ -396,7 +409,7 @@ end;
 procedure TCustomChartSeries.SetLegend(AValue: TChartSeriesLegend);
 begin
   if FLegend = AValue then exit;
-  FLegend := AValue;
+  FLegend.Assign(AValue);
   UpdateParentChart;
 end;
 
@@ -465,6 +478,18 @@ begin
   Source.AfterDraw;
 end;
 
+procedure TChartSeries.Assign(Source: TPersistent);
+begin
+  if Source is TChartSeries then
+    with TChartSeries(Source) do begin
+      Self.Marks := FMarks;
+      Self.FOnGetMark := FOnGetMark;
+      Self.Source := FSource;
+      Self.Styles := FStyles;
+    end;
+  inherited Assign(Source);
+end;
+
 procedure TChartSeries.BeforeDraw;
 begin
   inherited BeforeDraw;
diff --git a/components/tachart/tagraph.pas b/components/tachart/tagraph.pas
index 2884c4f66d..a2a986ae9b 100644
--- a/components/tachart/tagraph.pas
+++ b/components/tachart/tagraph.pas
@@ -75,6 +75,7 @@ type
     function GraphToAxisY(AY: Double): Double; virtual;
 
   public
+    procedure Assign(Source: TPersistent); override;
     destructor Destroy; override;
 
   public
@@ -1162,6 +1163,17 @@ begin
   // empty
 end;
 
+procedure TBasicChartSeries.Assign(Source: TPersistent);
+begin
+  if Source is TBasicChartSeries then
+    with TBasicChartSeries(Source) do begin
+      Self.FActive := FActive;
+      Self.FDepth := FDepth;
+      Self.FTitle := FTitle;
+      Self.FZPosition := FZPosition;
+    end;
+end;
+
 function TBasicChartSeries.AxisToGraphX(AX: Double): Double;
 begin
   Result := AX;
diff --git a/components/tachart/talegend.pas b/components/tachart/talegend.pas
index bf56fd3ec8..6d2cc59432 100644
--- a/components/tachart/talegend.pas
+++ b/components/tachart/talegend.pas
@@ -490,7 +490,7 @@ begin
     with TChartSeriesLegend(Source) do begin
       Self.FMultiplicity := FMultiplicity;
       Self.FOnDraw := FOnDraw;
-      Self.FVisible := FVisible;
+      Self.FUserItemsCount := FUserItemsCount;
     end;
 
   inherited Assign(Source);
diff --git a/components/tachart/taseries.pas b/components/tachart/taseries.pas
index 332a19159f..77f6133e21 100644
--- a/components/tachart/taseries.pas
+++ b/components/tachart/taseries.pas
@@ -195,6 +195,7 @@ type
     procedure GetLegendItems(AItems: TChartLegendItems); override;
     function GetSeriesColor: TColor; override;
   public
+    procedure Assign(ASource: TPersistent); override;
     constructor Create(AOwner: TComponent); override;
     destructor  Destroy; override;
 
@@ -317,6 +318,19 @@ begin
   FPointer.SetOwner(FChart);
 end;
 
+procedure TLineSeries.Assign(ASource: TPersistent);
+begin
+  if ASource is TLineSeries then
+    with TLineSeries(ASource) do begin
+      Self.LinePen := FLinePen;
+      Self.FLineType := FLineType;
+      Self.FOnDrawPointer := FOnDrawPointer;
+      Self.Pointer :=  FPointer;
+      Self.FShowPoints := FShowPoints;
+    end;
+  inherited Assign(ASource);
+end;
+
 procedure TLineSeries.BeginUpdate;
 begin
   ListSource.BeginUpdate;
diff --git a/components/tachart/tatypes.pas b/components/tachart/tatypes.pas
index 523f938eeb..67563ad370 100644
--- a/components/tachart/tatypes.pas
+++ b/components/tachart/tatypes.pas
@@ -207,6 +207,7 @@ type
 
   TChartMarks = class(TCustomChartMarks)
   public
+    procedure Assign(Source: TPersistent); override;
     constructor Create(AOwner: TCustomChart);
   published
     property Distance default DEF_MARKS_DISTANCE;
@@ -342,7 +343,6 @@ begin
       Self.FVisible := FVisible;
       Self.FOwner := FOwner;
     end;
-  inherited Assign(Source);
 end;
 
 constructor TChartElement.Create(AOwner: TCustomChart);
@@ -483,9 +483,11 @@ begin
       Self.FDistance := FDistance;
       Self.FFormat := FFormat;
       Self.FFrame.Assign(FFrame);
-      Self.FLabelBrush.Assign(FLabelBrush);
-      Self.FLabelFont.Assign(FLabelFont);
-      Self.FLinkPen.Assign(FLinkPen);
+      // FPC miscompiles virtual calls to generic type arguments,
+      // so as a workaround these assignments are moved to the specializations.
+      // Self.FLabelBrush.Assign(FLabelBrush);
+      // Self.FLabelFont.Assign(FLabelFont);
+      // Self.FLinkPen.Assign(FLinkPen);
       Self.FOverlapPolicy := FOverlapPolicy;
       Self.FStyle := FStyle;
     end;
@@ -705,6 +707,17 @@ end;
 
 { TChartMarks }
 
+procedure TChartMarks.Assign(Source: TPersistent);
+begin
+  if Source is TChartMarks then
+    with TChartMarks(Source) do begin
+      Self.FLabelBrush.Assign(FLabelBrush);
+      Self.FLabelFont.Assign(FLabelFont);
+      Self.FLinkPen.Assign(FLinkPen);
+    end;
+  inherited Assign(Source);
+end;
+
 constructor TChartMarks.Create(AOwner: TCustomChart);
 begin
   inherited Create(AOwner);