diff --git a/editor/js/Loader.js b/editor/js/Loader.js
index 3e16e4a9e8c6e4..4949984079ccce 100644
--- a/editor/js/Loader.js
+++ b/editor/js/Loader.js
@@ -704,25 +704,54 @@ function Loader( editor ) {
 					group.scale.multiplyScalar( 0.1 );
 					group.scale.y *= - 1;
 
+					let renderOrder = 0;
+
 					for ( let i = 0; i < paths.length; i ++ ) {
 
 						const path = paths[ i ];
 
-						const material = new THREE.MeshBasicMaterial( {
-							color: path.color,
-							depthWrite: false
-						} );
+						// fill
+
+						const fillMaterial = SVGLoader.createFillMaterial( path );
+
+						if ( fillMaterial ) {
+
+							const shapes = SVGLoader.createShapes( path );
 
-						const shapes = SVGLoader.createShapes( path );
+							for ( let j = 0; j < shapes.length; j ++ ) {
 
-						for ( let j = 0; j < shapes.length; j ++ ) {
+								const shape = shapes[ j ];
 
-							const shape = shapes[ j ];
+								const geometry = new THREE.ShapeGeometry( shape );
+								const mesh = new THREE.Mesh( geometry, fillMaterial );
+								mesh.renderOrder = renderOrder ++;
+
+								group.add( mesh );
+
+							}
+
+						}
 
-							const geometry = new THREE.ShapeGeometry( shape );
-							const mesh = new THREE.Mesh( geometry, material );
+						// stroke
 
-							group.add( mesh );
+						const strokeMaterial = SVGLoader.createStrokeMaterial( path );
+
+						if ( strokeMaterial ) {
+
+							for ( const subPath of path.subPaths ) {
+
+								const geometry = SVGLoader.pointsToStroke( subPath.getPoints(), path.userData.style );
+
+								if ( geometry ) {
+
+									const mesh = new THREE.Mesh( geometry, strokeMaterial );
+									mesh.renderOrder = renderOrder ++;
+
+									group.add( mesh );
+
+								}
+
+							}
 
 						}
 
diff --git a/examples/jsm/loaders/SVGLoader.js b/examples/jsm/loaders/SVGLoader.js
index 98e2c33dd3756f..38306625adbbd7 100644
--- a/examples/jsm/loaders/SVGLoader.js
+++ b/examples/jsm/loaders/SVGLoader.js
@@ -2663,6 +2663,22 @@ class SVGLoader extends Loader {
 					outerPoint.copy( tempV2_5 ).add( currentPoint );
 					innerPoint.add( currentPoint );
 
+					// in-loop fold detection to mitigate #25326
+					if ( innerSideModified ) {
+
+						//  when the second triangle's signed area would flip, snap innerPoint to the previous inner-side vertex
+
+						const refPt = joinIsOnLeftSide ? lastPointR : lastPointL;
+						const foldCross = ( outerPoint.x - refPt.x ) * ( innerPoint.y - refPt.y )
+							- ( outerPoint.y - refPt.y ) * ( innerPoint.x - refPt.x );
+						if ( ( joinIsOnLeftSide && foldCross < 0 ) || ( ! joinIsOnLeftSide && foldCross > 0 ) ) {
+
+							innerPoint.copy( refPt );
+
+						}
+
+					}
+
 					isMiter = false;
 
 					if ( innerSideModified ) {
@@ -2941,6 +2957,32 @@ class SVGLoader extends Loader {
 
 		}
 
+		// Second fix for #25326: Scan for reamining flipped (CW) triangles and collapse them to
+		// degenerated ones. This is safe and leaves no "holes" in the stroke because the flipped
+		// triangle's area is covered by neighbouring (CCW) triangles.
+
+		if ( vertices ) {
+
+			const tri = [ new Vector2(), new Vector2(), new Vector2() ];
+			const startFloat = vertexOffset * 3;
+
+			for ( let t = startFloat; t < currentCoordinate; t += 9 ) {
+
+				tri[ 0 ].set( vertices[ t ], vertices[ t + 1 ] );
+				tri[ 1 ].set( vertices[ t + 3 ], vertices[ t + 4 ] );
+				tri[ 2 ].set( vertices[ t + 6 ], vertices[ t + 7 ] );
+
+				if ( ShapeUtils.area( tri ) < 0 ) {
+
+					vertices[ t + 3 ] = tri[ 0 ].x;
+					vertices[ t + 4 ] = tri[ 0 ].y;
+
+				}
+
+			}
+
+		}
+
 		return numVertices;
 
 		// -- End of algorithm
diff --git a/examples/models/svg/tests/wideStroke.svg b/examples/models/svg/tests/wideStroke.svg
new file mode 100644
index 00000000000000..6b774f0b7abd22
--- /dev/null
+++ b/examples/models/svg/tests/wideStroke.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg viewBox="0 0 600 792" width="600" height="792">
+  <path stroke="#64C36E" fill="none" id="link_2_21_ok" d="M30,463.61904761904765C150,463.61904761904765,150,571.0476190476189,270,571.0476190476189" stroke-width="290" stroke-opacity="0.6"/>
+</svg>
\ No newline at end of file
diff --git a/examples/screenshots/webgl_loader_ldraw.jpg b/examples/screenshots/webgl_loader_ldraw.jpg
index 84e99d0b1fa39a..c44637b5bbfd5b 100644
Binary files a/examples/screenshots/webgl_loader_ldraw.jpg and b/examples/screenshots/webgl_loader_ldraw.jpg differ
diff --git a/examples/webgl_loader_svg.html b/examples/webgl_loader_svg.html
index aec169ee119911..4012e0530239f0 100644
--- a/examples/webgl_loader_svg.html
+++ b/examples/webgl_loader_svg.html
@@ -122,6 +122,7 @@
 					'emptyPath': 'models/svg/emptyPath.svg',
 					'emoji': 'models/svg/emoji.svg',
 					'blueprint': 'models/svg/blueprint.svg',
+					'wideStroke': 'models/svg/tests/wideStroke.svg',
 
 				} ).name( 'SVG File' ).onChange( update );
 
diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index ad830e1b2daf85..a63971cd0bce20 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -544,7 +544,7 @@ class WebGLRenderer {
 
 		if ( _outputBufferType !== UnsignedByteType ) {
 
-			output = new WebGLOutput( _outputBufferType, canvas.width, canvas.height, depth, stencil );
+			output = new WebGLOutput( _outputBufferType, canvas.width, canvas.height, antialias, depth, stencil );
 
 		}
 
diff --git a/src/renderers/webgl/WebGLOutput.js b/src/renderers/webgl/WebGLOutput.js
index 228d1412c18633..bca2356e1a8f41 100644
--- a/src/renderers/webgl/WebGLOutput.js
+++ b/src/renderers/webgl/WebGLOutput.js
@@ -29,13 +29,14 @@ const toneMappingMap = {
 	[ CustomToneMapping ]: 'CUSTOM_TONE_MAPPING'
 };
 
-function WebGLOutput( type, width, height, depth, stencil ) {
+function WebGLOutput( type, width, height, antialias, depth, stencil ) {
 
 	// render targets for scene and post-processing
 	const targetA = new WebGLRenderTarget( width, height, {
 		type: type,
 		depthBuffer: depth,
 		stencilBuffer: stencil,
+		samples: antialias ? 4 : 0,
 		depthTexture: depth ? new DepthTexture( width, height ) : undefined
 	} );