diff --git a/packages/editor/cypress/snapshots/renderAll.cy.ts/map-complex.snap.png b/packages/editor/cypress/snapshots/renderAll.cy.ts/map-complex.snap.png
index c42ee9e7..1c79e710 100644
Binary files a/packages/editor/cypress/snapshots/renderAll.cy.ts/map-complex.snap.png and b/packages/editor/cypress/snapshots/renderAll.cy.ts/map-complex.snap.png differ
diff --git a/packages/editor/cypress/snapshots/topicFontChange.cy.ts/changeFontColor.snap.png b/packages/editor/cypress/snapshots/topicFontChange.cy.ts/changeFontColor.snap.png
index 3c5c27fb..dfb3606d 100644
Binary files a/packages/editor/cypress/snapshots/topicFontChange.cy.ts/changeFontColor.snap.png and b/packages/editor/cypress/snapshots/topicFontChange.cy.ts/changeFontColor.snap.png differ
diff --git a/packages/mindplot/src/components/ConnectionLine.ts b/packages/mindplot/src/components/ConnectionLine.ts
index dc12200b..f192f3be 100644
--- a/packages/mindplot/src/components/ConnectionLine.ts
+++ b/packages/mindplot/src/components/ConnectionLine.ts
@@ -75,6 +75,7 @@ class ConnectionLine {
         break;
       case LineType.THIN_CURVED:
         line = new CurvedLine();
+        (line as CurvedLine).setWidth(1);
         break;
       case LineType.THICK_CURVED:
         line = new CurvedLine();
diff --git a/packages/mindplot/src/components/TopicStyle.ts b/packages/mindplot/src/components/TopicStyle.ts
index 0c6b8ed4..e14765c3 100644
--- a/packages/mindplot/src/components/TopicStyle.ts
+++ b/packages/mindplot/src/components/TopicStyle.ts
@@ -100,7 +100,7 @@ const TopicDefaultStyles = {
       color: '#525C61',
     },
     msgKey: 'ISOLATED_TOPIC',
-    connectionStyle: LineType.THIN_CURVED,
+    connectionStyle: LineType.THICK_CURVED,
     connectionColor: '#495879',
     shapeType: 'line' as TopicShapeType,
   },
diff --git a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-fill.snap.png b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-fill.snap.png
index ed79dc26..49689ad1 100644
Binary files a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-fill.snap.png and b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-fill.snap.png differ
diff --git a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-stroke.snap.png b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-stroke.snap.png
index 8ae25545..876933b4 100644
Binary files a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-stroke.snap.png and b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-stroke.snap.png differ
diff --git a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-width.snap.png b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-width.snap.png
index 6463e4e6..e83d61c4 100644
Binary files a/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-width.snap.png and b/packages/web2d/cypress/snapshots/curvedline.cy.js/curvedline-width.snap.png differ
diff --git a/packages/web2d/src/components/CurvedLine.ts b/packages/web2d/src/components/CurvedLine.ts
index 3ef16816..2f8926bb 100644
--- a/packages/web2d/src/components/CurvedLine.ts
+++ b/packages/web2d/src/components/CurvedLine.ts
@@ -64,7 +64,7 @@ class CurvedLine extends WorkspaceElement<CurvedLinePeer> implements Line {
     return this.peer.getTo();
   }
 
-  setShowEndArrow(visible) {
+  setShowEndArrow(visible: boolean) {
     this.peer.setShowEndArrow(visible);
   }
 
@@ -72,15 +72,15 @@ class CurvedLine extends WorkspaceElement<CurvedLinePeer> implements Line {
     return this;
   }
 
-  isShowEndArrow() {
+  isShowEndArrow(): boolean {
     return this.peer.isShowEndArrow();
   }
 
-  setShowStartArrow(visible) {
+  setShowStartArrow(visible: boolean): void {
     this.peer.setShowStartArrow(visible);
   }
 
-  isShowStartArrow() {
+  isShowStartArrow(): boolean {
     return this.peer.isShowStartArrow();
   }
 
diff --git a/packages/web2d/src/components/peer/svg/CurvedLinePeer.ts b/packages/web2d/src/components/peer/svg/CurvedLinePeer.ts
index 48ba36a0..359d1d4b 100644
--- a/packages/web2d/src/components/peer/svg/CurvedLinePeer.ts
+++ b/packages/web2d/src/components/peer/svg/CurvedLinePeer.ts
@@ -30,7 +30,7 @@ class CurvedLinePeer extends ElementPeer {
   private _y2: number;
   private _showEndArrow: boolean;
   private _showStartArrow: boolean;
-  private _width: any;
+  private _width: number;
 
   constructor() {
     const svgElement = window.document.createElementNS('http://www.w3.org/2000/svg', 'path');
@@ -39,13 +39,14 @@ class CurvedLinePeer extends ElementPeer {
     this._customControlPoint_2 = false;
     this._control1 = { x: 0, y: 0 };
     this._control2 = { x: 0, y: 0 };
-    this.setWidth(1);
     this._showEndArrow = false;
     this._showStartArrow = false;
     this._x1 = 0;
     this._x2 = 0;
     this._y1 = 0;
     this._y2 = 0;
+    this._width = 1;
+    this._updatePath();
   }
 
   setSrcControlPoint(control: PositionType): void {
@@ -136,7 +137,7 @@ class CurvedLinePeer extends ElementPeer {
     this._updatePath();
   }
 
-  isShowStartArrow() {
+  isShowStartArrow(): boolean {
     return this._showStartArrow;
   }
 
@@ -144,15 +145,18 @@ class CurvedLinePeer extends ElementPeer {
     return this._width;
   }
 
-  setWidth(value: number) {
+  setWidth(value: number): void {
     this._width = value;
-    if (this._width === 1) {
-      this.setFill('none');
-    }
+    this._updatePath();
+  }
+
+  setFill(color: string, opacity?: number) {
+    super.setFill(color, opacity);
     this._updatePath();
   }
 
   private _updatePath(avoidControlPointFix?: boolean) {
+    // Update style based on width ....
     if ($defined(this._x1) && $defined(this._y1) && $defined(this._x2) && $defined(this._y2)) {
       this._calculateAutoControlPoints(avoidControlPointFix);
 
@@ -178,7 +182,7 @@ class CurvedLinePeer extends ElementPeer {
       const curveP6 = CurvedLinePeer._pointToStr(this._x1, this._y1 + this.getWidth() / 2);
 
       const path = `M${moveTo} C${curveP1} ${curveP2} ${curveP3} ${
-        this.getWidth() > 1 ? ` ${curveP4} ${curveP5} ${curveP6} Z` : ''
+        this.getWidth() >= 1 ? ` ${curveP4} ${curveP5} ${curveP6} Z` : ''
       }`;
       this._native.setAttribute('d', path);
     }
@@ -233,7 +237,7 @@ class CurvedLinePeer extends ElementPeer {
     }
   }
 
-  setDashed(length, spacing) {
+  setDashed(length: number, spacing: number) {
     if ($defined(length) && $defined(spacing)) {
       this._native.setAttribute('stroke-dasharray', `${length},${spacing}`);
     } else {