text displays with see_through tag not rendered correctly when background color is set

[Dqu1J]

The background of a text display is rendered on top of the text when background is set and see_through is set to true.

To reproduce:

1. Spawn a text display with a set background color and see_through set to true, e.g. /summon minecraft:text_display ~ ~ ~ {text:"hi",billboard:"center",background:-23296,see_through:true}
2. The text background renders on top of the text, which isn't correct. (can be seen if the background is transparent)

Vanilla:

ImmediatelyFast 1.2.20+1.21.1: