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This looks more like a cacheing issue though. You can try running a rebuild and restart, that should reset the cache buster.
It seems when we embed google font from acp it works. But if we use google font in our style file it does not work well.
The weird thing I experienced is when I changed my font setting in phpstorm to "Ubuntu" and then I pushed my changes in git using built in plug-in in phpstorm and later udpated my live file, I found that my font-family was overwritten in body, h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6
Any clue?? whats happening here ....