I happened to notice that React will throw `Hooks can only be called inside the body of a function component` if a sibling element calls `ReactDOMServer.renderToStaticMarkup`. I have a [fiddle](https://jsfiddle.net/er4kL3of/) that shows this behavior (I think you need to manually open your console to see the error).

If you wrap the sibling element in a component or even just assign it a variable, this issue does not occur.

It's easy to get around and is a pretty specific bug, but why might this be happening?


children: nextChildren,
              childIndex: 0,
              context: context,
              footer: '',
            };
            if (__DEV__) {
              ((frame: any): FrameDev).debugElementStack = [];
            }
            this.stack.push(frame);
            return '';
          }
          case REACT_MEMO_TYPE: {
            const element: ReactElement = ((nextChild: any): ReactElement);
            let nextChildren = [
              React.createElement(
                elementType.type,
                Object.assign({ref: element.ref}, element.props),
              ),
            ];
            const frame: Frame = {
              type: null,
              domNamespace: parentNamespace,
              children: nextChildren,
              childIndex: 0,
              context: context,
              footer: '',
            };
            if (__DEV__) {
              ((frame: any): FrameDev).debugElementStack = [];
            }