src/vs/base/browser/ui/scrollbar/scrollableElement.ts/AbstractScrollableElement/_onDidScroll
class AbstractScrollableElement:	private _onDidScroll(e: ScrollEvent): void {
		this._shouldRender = this._horizontalScrollbar.onDidScroll(e) || this._shouldRender;
		this._shouldRender = this._verticalScrollbar.onDidScroll(e) || this._shouldRender;

		if (this._options.useShadows) {
			this._shouldRender = true;
		}

		if (this._revealOnScroll) {
			this._reveal();
		}

		if (!this._options.lazyRender) {
			this._render();
		}
	}