I just updated to 29.0.1795.30 (on Windows 8.1) and it crashes on startup every time if activation order tab cycling is enabled, before the window even shows up. It starts fine with the --no-experiments flag or with that experiment disabled, but now I miss having a useful ctrl-tab.

Edit: I just realized I can configure ctrl-tab and ctrl-shift-tab to cycle through tabs in recently used order. Awesome! I think that should be the default, but I'm happy as long as it's an option.