Whenever holograms are updated, they flicker for 1.7 clients. This does not happen on any other version.
Here's what I mean: https://imgur.com/a/gAoWmR4

Fixed.

That happens because the substitute entity for invisible armorstands needs to be despawned and respawned to update the hologram. Can’t really be fixed due to the limitations this poses and the way the Via plugins work.

right, not sure what you're on about, the entity does not need to be despawned and respawned to update it's name...

Feel free to propose a better solution for this then please. By just updating metadata the substitute either bugs out or becomes visible in my testing.

Feel free to propose a better solution for this then please. By just updating metadata the substitute either bugs out or becomes visible in my testing.

Commenting out updateLocation(); in the updateState() method in the ArmorStandReplacement class seems to have no issues with holograms... what do you to do to see them bug out or become visible?