lsnes - Lua script that causes the screenshot issue

function on_paint(flag)
  -- Those cause the screenshot issue
  gui.solidrectangle(0, 0, 512, 448, 0xb0000000)
  gui.rectangle(-120, -120, 700, 700)

  -- Display Mario location for reference
  local x = memory.readsword("WRAM", 0x94)
  local y = memory.readsword("WRAM", 0x96)
  local camx = memory.readsword("WRAM", 0x1462)
  local camy = memory.readsword("WRAM", 0x1464)
  gui.rectangle(2*(x - camx), 2*(y - camy), 32, 48)
end

function on_post_load(name, was_savestate)
  gui.repaint()
end

gui.repaint()