TM1 is retired. As long as you keep a copy of TM1 you can continue to use it but this might change in the future.
If you just want to access most trainers you can also mark them as favorite and they appear at the top of the list. And they also appear in the tray icon context menu.
I assume you mean the layout/layout window size buttons.
It appeared to reload the center part that contained the CH site, but the left side was unaffected. It didn't jump to top, resize or anything.