Not a "modded game"
Where there shown that server is modded?? MiniHUD is clientside.
Dhranios, "feature" it's not allways that "mean they're by design". Actualy "mean they're by design or bug which newer will be fixed in any reason, usualy because developer think it shouldn't be fixed". CCE can't be feature, but effect of CCE can. Tnt dupping wass eventualy fixed in some snapshot and than was removed back. To fix bedrock breacking just ONE line must be deleated. Both of this bugs pathed in custom cores. So, if it not feature, why it's not fixed for YERS? And special for you: feature mustn't be declared as a feature. And there is no need to talk about the status of the report, you already said that the funnel in F3 will not be fixed, because the status "works as intended" to save traffic.
Can confirm in 1.18.2
Where did you get that server by paper type? That is, server problems are considered invalid due to client-side addons???