that's a new one, i've seen probably thousands of english sentences and have yet to see anything of the sort

if anything here's a counterexample: DJ_Saidez was underage when his account was created, yet he's been an excellent contributor in my eyes

investigating a little i did notice someone translating into languages they didn't have listed as theirs, likely with a machine translator, but that's far from unique to underage users and should be judged on its own rights instead of discriminating by age

if you have examples that would prove me wrong then do let me know

Sounds like a personal experience thing. I don't think contribution quality has much to do with age in general. We've seen 16- and even 14-year-olds contributing nicely, and old supposedly mature people making daft sentences.

Do you have any specific examples? Unless this is really as common as you say, I'm not sure how useful this would be. You don't exactly need university-level language skills to make good contributions here, so this feels more prejudiced than practical.

Hi, I had this issue too but now it seems to recover.

I'm currently writing on a Mac computer without Noto Sans being installed and what you said is not present on my browser.

Maybe you have got Noto Sans or you are on a Linux distro.