QtQuick Controls: TableView example issues

Noticed the following issues when I tried to run this example with my 52 Alpha build:

• The tab titles of the example are trimmed/clipped at the beginning.
• The dropdown list at the top with different delegates is hidden in all tabs except Delegates, but the dropdown list shows up on all tabs when clicked on top-left corner of the window.
• Every click to the delegate list dropdown generates this warning:
  QObject: Cannot create children for a parent that is in a different thread.
  (Parent is QQuickAnimatorController(0x2f60e90), parent's thread is QThread(0x11d0660), current thread is QSGRenderThread(0x1942110)
  QUnifiedTimer: animation driver already installed...