Just tested here. Didn't work at all with maps.google.com/maps/m or /m? Also didn't work with maeMaps bookmark.

Uninstalled and re-installed, still didn't work.

Fired up the location widget, got a lock, both sites worked, prompted me to share my location. Powered down the location widget, GPS icon gone from status bar. Both sites will now power up the GPS and get a lock.

Google maps didn't work until I tried maeMaps. It prompted me to share location. Trying google again, got me a prompt and they work fine now.

Might be worth a shot using the location widget and maeMaps