Tagging problem

Chrome + Android 4.2.2 autocompletes correctly, but only if clicking on avatar image (rathet than user name), whilst Android 6 & 7 work perfectly.

 

I've tryed a few tags, Steve R didn't work first time but it did second time with pointer on his name
@Scrungee tag only works when i put the pointer on to his name but if i'm to the rightside of the box but still inside it don't work and the curser disappears as well

Just tryed Scrungee again and it work no problem