src/vs/workbench/contrib/debug/browser/debugHover.ts/DebugHoverWidget/layoutTreeAndContainer
class DebugHoverWidget:	private layoutTreeAndContainer(initialLayout: boolean): void {
		const scrollBarHeight = 10;
		const treeHeight = Math.min(this.editor.getLayoutInfo().height * 0.55, this.tree.contentHeight + scrollBarHeight);
		this.treeContainer.style.height = `${treeHeight}px`;
		this.tree.layout(treeHeight, initialLayout ? 400 : undefined);
		this.editor.layoutContentWidget(this);
		this.scrollbar.scanDomNode();
	}