helix behaves differently using different background color values

[sumit-modak]

Summary

Helix respects terminal opacity only when background is set to #000000
And this happens only in kitty, in alacritty helix doesn't shows any transparency
In both cases my terminal opacity is set to 0.9

Reproduction Steps

opacity.mp4

Platform

Linux Wayland

Terminal Emulator

Kitty

Installation Method

nixpkgs

Helix Version

helix 25.01.1 (e7ac2fc)

[jmkraus]

I assume this is a duplicate of #10223 and #11456

[sumit-modak]

What is the reason to not respect terminal's opacity?