I'm using Chrome Version 28.0.1500.71 on Fedora 18 (Linux 3.9.10-200.fc18.x86_64 #1 SMP Sun Jul 14 01:36:53 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux). When I click on the zoom the it presents the menu with 100% showing. Clicking on the 100% just closes the window. It never shows the rest of the menu to change size. If I hold the alt key and use the mouse wheel it appears to appears to work (it zooms out the entire contents of the map but doesn't stay focussed on where it was.
I've seen this posted as an issue in previous posts that auto-closed after two months. Are they any plans to fix this?