Slow editing of tidied code: have you heard from Apple yet?

Howdy, Alexander; I've posted this to you as a problem report before, and your response was that it was an Apple problem, and not the app's. I'm just here to ask whether you've heard from Apple.

The problem being, it's about impossible to edit tidied code. I have, for example, several files whose first records are up to 1200+ characters. While they are fully visible in Textastic, it is painful even to place the cursor accurately in the record, and agonizing to use the cursor-movement wheel. (You were able to reproduce the problem with example code I sent.)

For now, I've reverted to BBEdit on my MBP.