We have actually responded to this question on many occasions and the answer has not changed. It’s one nobody is happy about including ourselves.
Working with text is an incredibly difficult task. For starters, you have to support every language on the planet. You have to support not only left-to-right text, but right-to-left as well, emojies, various glyphs, shift states, control states, etc. Apple and Google have spent years with dozens of engineers to build in the keyboard support that they have. We can’t just magically recreate that.
Believe me, we would love to do this this, but its not something we can reasonably tackle.
Rob