Fortunately, if you are a fan of blue-themed keyboards that are bug-free, EVO user Eugene has exactly what you are looking for. All you need to do to get the bad boy you see at right up and running on your EVO 3D is download the .apk here, install it, and start using it (tutorial on how to switch keyboards here).
Now, of course, with all keyboard apps you must understand the risk that everything you type can be collected. It normally isn't, but I just thought I should warn you. As long as you're okay with this, then congratulations!
You now have a Gingerbread keyboard on your EVO 3D sans the bugs that shipped with the stock keyboard.
Let us know if this solves the bugs for you![RootzWiki via AddictiveTips]