This used to be the case 10 years ago. I can't remember the last time a steward asked our fans to sit down away from home, which never works but still I genuinely can not remember the last time.
When you're away it's different. We're talking about home fans. Try standing up in row E of the North Stand for the whole game. I'm sure someone behind you or a steward will tell you to sit down. Atleast in a safe standing area, fans will be standing all game every game.