diff --git a/packages/visx-event/src/localPointGeneric.ts b/packages/visx-event/src/localPointGeneric.ts
index b6675f974..93588c442 100644
--- a/packages/visx-event/src/localPointGeneric.ts
+++ b/packages/visx-event/src/localPointGeneric.ts
@@ -3,6 +3,29 @@ import { EventType } from './types';
 import { isSVGElement, isSVGGraphicsElement, isSVGSVGElement } from './typeGuards';
 import getXAndYFromEvent from './getXAndYFromEvent';
 
+const CHILD_ID = '__visx-child-ctm-workaround';
+
+/**
+ * Gets the screen CTM applied to children.
+ *
+ * Normally this is equivalent to `node.getScreenCTM()` but
+ * when `node` is a nested `SVGSVGElement` Firefox returns
+ * the screen CTM of the parent `SVGSVGElement`. See:
+ * - https://bugzilla.mozilla.org/show_bug.cgi?id=1344537
+ * - https://bugzilla.mozilla.org/show_bug.cgi?id=1446011
+ */
+function getChildScreenCTM(node: SVGGraphicsElement): DOMMatrix | null {
+  if (!(node instanceof SVGSVGElement)) return node.getScreenCTM();
+  let child = node.children.namedItem(CHILD_ID) as SVGGraphicsElement;
+  if (child === null) {
+    child = document.createElementNS('http://www.w3.org/2000/svg', 'g');
+    child.id = CHILD_ID;
+    node.appendChild(child);
+  }
+  const screenCTM = child.getScreenCTM();
+  return screenCTM;
+}
+
 export default function localPoint(node: Element, event: EventType) {
   if (!node || !event) return null;
 
@@ -10,7 +33,7 @@ export default function localPoint(node: Element, event: EventType) {
 
   // find top-most SVG
   const svg = isSVGElement(node) ? node.ownerSVGElement : node;
-  const screenCTM = isSVGGraphicsElement(svg) ? svg.getScreenCTM() : null;
+  const screenCTM = isSVGGraphicsElement(svg) ? getChildScreenCTM(svg) : null;
 
   if (isSVGSVGElement(svg) && screenCTM) {
     let point = svg.createSVGPoint();
diff --git a/packages/visx-vendor/scripts/buildVendor/index.ts b/packages/visx-vendor/scripts/buildVendor/index.ts
index 06b7b8225..63f6cbace 100644
--- a/packages/visx-vendor/scripts/buildVendor/index.ts
+++ b/packages/visx-vendor/scripts/buildVendor/index.ts
@@ -72,10 +72,10 @@ async function build() {
 
   const { stdout, stderr } = await exec(
     `babel \
-      --config-file ${BABEL_CONFIG_FILE} \
+      --config-file "${BABEL_CONFIG_FILE}" \
       --only ${transpileGlob} \
-      --out-dir ${VENDOR_CJS_PATH} \
-      ${NODE_MODULES_PATH}`,
+      --out-dir "${VENDOR_CJS_PATH}" \
+      "${NODE_MODULES_PATH}"`,
   );
 
   if (stdout) {