background with parallax: black horizontal line between tiled images

[VioletJewel]

What Operating System(s) are you seeing this problem on?

Linux X11

Which Wayland compositor or X11 Window manager(s) are you using?

X.Org, dwm.

WezTerm version

20241015-083151-9ddca7bd

Did you try the latest nightly build to see if the issue is better (or worse!) than your current version?

Yes, and I updated the version box above to show the version of the nightly that I tried

Describe the bug

This happens is an example background image:

This is it looks like when tiled with parallax:

To Reproduce

use background image with parallax

Configuration

my config:

local wezterm = require 'wezterm'
local cfg = wezterm.config_builder()

cfg.font = wezterm.font_with_fallback {
  {
    family = 'FiraCode Nerd Font',
    harfbuzz_features = {
      'cv02', 'cv13', 'cv14', 'cv25', 'cv26', 'cv27', 'cv28', 'cv32',
      'ss03', 'ss04', 'ss05', 'ss06', 'ss07', 'ss09',
    }
  },
  'Noto Color Emoji',
}

cfg.color_scheme = 'Tokyo Night Moon'

cfg.use_fancy_tab_bar = false
cfg.hide_tab_bar_if_only_one_tab = true
cfg.tab_bar_at_bottom = true

cfg.adjust_window_size_when_changing_font_size = false
cfg.audible_bell = "Disabled"
cfg.bold_brightens_ansi_colors = false
cfg.check_for_updates = false

cfg.background = {
  {
    source = {
        File = os.getenv 'HOME' .. '/.config/wezterm/flower_bg_tile.png'
    },
    attachment = { Parallax = 0.1 },
  }
}

return cfg

Expected Behavior

No response

Logs

No response

Anything else?

No response