I just updated philippinstories.com to 1.0.0-rc1 and encountered an interesting phenomenon.
The site runs in en-GB (settings general page) and is in Manila timezone.
The update said it would download and install en-US. I figured no harm since it should add en-GB translation files if needed.
After updating, it said sit tight while we update your translations and then it proceeded to download and install es-ES translation files for core, some plugins and some “twenty series” themes.
Where the heck did it get the idea I wanted to use Spanish?