Hello MissingParenthesis,
Welcome to Apple Support Communities. It sounds like you're having trouble with the keyboard while using your Google apps. I'd be happy to share information that may help.
You mentioned that you're not seeing parenthesis in the keyboard while using Google apps. If this is only happening with Google apps, try removing all keyboards besides the English keyboard under Settings > General > Keyboard > Keyboards: About the keyboards settings on your iPhone, iPad, and iPod touch.
Also, you may want to check for any app updates: Update apps or use automatic downloads
Finally, try removing the affected apps and reinstalling them from the App Store: How to delete apps on your iPhone, iPad, and iPod touch.
Take care.