OK, but the Flutter gallery has zero selectable text, as far as I can see. Seems like a great case of where developer decided "doesn't need selection, let's let the user drag to scroll with their mouse instead".
Why even make it a 50/50 choice? I hate apps without selectable text and they're everywhere. Translating something becomes a nightmare and that hurts useability.
It's like if you made spoiler 50/50. Do you want to see this without clicking?
I think we really overlook the thought that had gone into making js, and other open tech.
Exactly. And I didn't even realize how often I subconsciously select text while I read until I saw the relevant xkcd. [1]
I truly think my random clicking on paragraphs that I'm approaching isn't just ADHD but a way of helping my eyes stay on track. It's very disconcerting when the text doesn't select. (As, clearly, all these comments noticed as well -- why were we all trying to select the text? To check if it's Flash-ish, of course, but also we just like things to grab onto while we read.)
Try putting their demo website in Google Translate or even try to select the text on an email in their demo webmail app to copy paste it in google translate ....