Hi,
I updated plugin to 2.0.9-beta-20170918-1858.
Then, tileOverlay can not be Shown.
You can reproduce the issue in cordova-google-maps v2.0 example.

Please check it, thanks a lot.
How did you write your code?
Oh...

Fixed. Please reinstall the plugin from the multiple_maps branch.
Thank you for the quick & awesome support !!
You are welcome. I appreciate if you donate tip