thanks @nite, I thinks many another functions in android maybe meet this problem, please review and update them all.
I will update this topic is [SOLVED].
From what we investigated so far, this is an isolated issue for Facebook plug-in only and it do not happen consistently across different devices (Nexus, other brands), we will do more off-connection test in the future to improve.
Thanks for reporting this issue, we were able to reproduce this issue and be able to fix it in 2.2.2, 2.2.2 is live now, you should be able to update it.