diff --git a/packages/mermaid/src/rendering-util/rendering-elements/shapes/slopedRect.ts b/packages/mermaid/src/rendering-util/rendering-elements/shapes/slopedRect.ts
index 6f467f9e8..1a17c330f 100644
--- a/packages/mermaid/src/rendering-util/rendering-elements/shapes/slopedRect.ts
+++ b/packages/mermaid/src/rendering-util/rendering-elements/shapes/slopedRect.ts
@@ -7,12 +7,26 @@ import rough from 'roughjs';
 export const slopedRect = async (parent: SVGAElement, node: Node) => {
   const { labelStyles, nodeStyles } = styles2String(node);
   node.labelStyle = labelStyles;
-  const { shapeSvg, bbox, label } = await labelHelper(parent, node, getNodeClasses(node));
   const nodePadding = node.padding ?? 0;
   const labelPaddingX = node.look === 'neo' ? nodePadding * 2 : nodePadding;
   const labelPaddingY = node.look === 'neo' ? nodePadding * 1 : nodePadding;
-  const w = Math.max(bbox.width + (labelPaddingX ?? 0) * 2, node?.width ?? 0);
-  const h = Math.max(bbox.height + (labelPaddingY ?? 0) * 2, node?.height ?? 0);
+
+  // If incoming height & width are present, subtract the padding from them
+  // as labelHelper does not take padding into account
+  // also check if the width or height is less than minimum default values (50),
+  // if so set it to min value
+  if (node.width || node.height) {
+    node.width = Math.max((node?.width ?? 0) - labelPaddingX * 2, 50);
+    node.height = Math.max((node?.height ?? 0) / 1.5 - labelPaddingY * 2, 50);
+  }
+
+  const { shapeSvg, bbox, label } = await labelHelper(parent, node, getNodeClasses(node));
+
+  const totalWidth = Math.max(bbox.width, node?.width ?? 0) + labelPaddingX * 2;
+  const totalHeight = (Math.max(bbox.height, node?.height ?? 0) + labelPaddingY * 2) * 1.5;
+
+  const w = totalWidth;
+  const h = totalHeight / 1.5;
   const x = -w / 2;
   const y = -h / 2;