New source found from dndbeyond.com

ddb_main/tools/js/Shared/components/Subsection/Subsection.tsx

@@ -1,12 +1,12 @@
-import React from "react";
+import { PureComponent, PropsWithChildren } from "react";
 
 import { FormatUtils } from "@dndbeyond/character-rules-engine/es";
 
-interface Props {
+interface Props extends PropsWithChildren {
   name: string;
   className: string;
 }
-export default class Subsection extends React.PureComponent<Props> {
+export default class Subsection extends PureComponent<Props> {
   static defaultProps = {
     className: "",
   };

ddb_main/tools/js/Shared/components/Subsection/SubsectionFooter/SubsectionFooter.tsx

@@ -1,6 +1,6 @@
-import React from "react";
+import { PureComponent, PropsWithChildren } from "react";
 
-export default class SubsectionFooter extends React.PureComponent {
+export default class SubsectionFooter extends PureComponent<PropsWithChildren> {
   render() {
     const { children } = this.props;
 

ddb_main/tools/js/Shared/components/Subsection/SubsectionHeader/SubsectionHeader.tsx

@@ -1,9 +0,0 @@
-import React from "react";
-
-export default class SubsectionHeader extends React.PureComponent {
-  render() {
-    const { children } = this.props;
-
-    return <div className="ct-subsection__header">{children}</div>;
-  }
-}

ddb_main/tools/js/Shared/components/Subsection/SubsectionHeaderContent/SubsectionHeaderContent.tsx

@@ -1,9 +0,0 @@
-import React from "react";
-
-export default class SubsectionHeaderContent extends React.PureComponent {
-  render() {
-    const { children } = this.props;
-
-    return <div className="ct-subsection__header-content">{children}</div>;
-  }
-}