This applies to the pylon screen border effect mainly, although the glow from the data tower ring also has a lesser effect. The effect stays on the player's screen if they go through a portal of any kind within range of a pylon. The only way to get rid of the effect is to go back to that pylon and walk out of the range again.
The glowing effect from the tower ring does not persist quite as much, although it is still visible on clouds and rain when the world is still loading.
This applies to the pylon screen border effect mainly, although the glow from the data tower ring also has a lesser effect. The effect stays on the player's screen if they go through a portal of any kind within range of a pylon. The only way to get rid of the effect is to go back to that pylon and walk out of the range again.
The glowing effect from the tower ring does not persist quite as much, although it is still visible on clouds and rain when the world is still loading.