The minimum amount of characters per answer is 30 (wasn't it less, a while ago?). There are questions whose answer can safely be less than 30 chars, I've answered a few like that in the previous days (yes, the answers are sufficient. For example this one. Without the links, the additional sentence and the "Take a look at", it's less than 30 chars, but still a good answer). Especially when answering from a mobile device, adding filling symbols like "Take a look at" rather than "Check" is not preferred.
So I provide such an answer, and get back the message that 30 characters are required. Then I extend the answer somehow, and submit again. And the Captcha appears.
It is annoying. And the captcha doesn't work on mobile. Can this check be disabled for users with, say, 1k+ reputation? Or at least the captcha be tested on mobile browsers (Android 2.2 default browser here)