This is a weird one.
So, there is a click handler on the indicator number, and on the entire "box" holding the drop down arrow.
Android is just really finicky about whether it detects a hit to them. I've been able to get a click to it registered to the Ask link despite my finger literally not obscuring (let alone touching) the Ask link.
This appears to be an Android only bug, which doesn't manifest on the iPhone or any Windows Phone. It appears to be somewhat random, and influenced by the hardware used. It happens quite frequently on my Nexus S, but somewhat less on other developer's phones (of different makes). This observation is supported by your report of it not happening on Meta.SO, as the styling and code is exactly the same on all mobile views (at time of writing at least); there shouldn't be any functional difference between them.
Giving that the targets here are already bigger than the link that is "out competing" them, I don't really know what to do about it. Lacking a good way to fix this, I'm forced to status-declined it.