E716: Key not present in Dictionary: "special_tabs && s:is_special(s:tab_buffer(a:tnr))"

[wookayin]

The following error happens on startup when loading this plugin via lazy.nvim (with lazy = false); it was working OK if loaded using vim-plug.

Error detected while processing function xtabline#render#tabline[15]..<SNR>139_render_tabs[6]..<SNR>139_format_tab_label[7]..<SNR>139_tab_hi:
line    2:
E716: Key not present in Dictionary: "special_tabs && s:is_special(s:tab_buffer(a:tnr))"

[wookayin]

As a workaround one can lazy-load the plugin AFTER all other RC files are loaded, e.g.

{
  'mg979/vim-xtabline',
  event = 'VimEnter'
}