Describe the bug, provide any errors
On all my server versions (1.15.2 and 1.8) holograms appear lower on 1.8 clients as apposed to where they are positioned in higher versions

How can we reproduce it?
Steps to reproduce the behavior:

Login on 1.9+
Create a hologram
Login on 1.8, the hologram is lower
Expected behaviour
Holograms should be at the same height

ViaVersion Dump:
https://dump.viaversion.com/74335738c18d2bb24dbb6e936ee88d8bae046dc89d50a3d80eabd9848ae4d21b

Is this on a 1.8 or 1.8.9 client? 1.8.x clients are not distinguishable by the server and I will always assume a 1.8.9 client.

Ok so here is the image of a hologram made with Holographic displays on a 1.14.4 client with the server versions 1.15.2 (latest paper jar). Notice the hologram height

Here is the same image but taken on a 1.8 client

Dump:
https://dump.viaversion.com/11809c5cec1c6fd9be13b2c7de1d6d1e3d5bea2996fa47e4dda52f92388bc948

Here is the screenshots on a 1.9 client (looks like this is fine):

And 1.11 which also looks fine:

Seems like just 1.8 clients on 1.15.2 server is too high. And also my Y offset is -4.9 or something. It seems this value isnt doing anything as 1.9+ clients are fine and 1.8 clients are too high

While not directly the problem here, it's worth noting that the nameplate of marker armour stands is shown at the feet of the armour stand in early 1.8 versions but above the head in later 1.8 versions. As both versions use the same protocol version it is not really possible to detect and compensate between these two versions.

Well im pretty sure every holograms plugin uses armor stands since I just tried 2 more plugins and they have the same issue. Ive seen many servers without this issue so what would be the way to go about fixing. Theres 100% nothing viaversion can patch here? Like making holograms on armor stands at the base again?

Hey. I have the exact same issue

try enabling fix hologram in viaversion's config!