[Bug]: TOC ignore:true for first header remove that header

[soroshsabz]

ITNOA

in latest version 3.0.17 when I tried to use <!-- TOC ignore:true --> in first line before # first header, and then Update TOC, this plugin remove my first header. (this very strange)

I try your workaround in #40

<!-- TOC -->
<!--\TOC-->

but does not work too.

Reproduce steps:

1. first if we have some markdown like below

<!-- TOC -->
<!--\TOC-->

<!-- TOC ignore:true -->
# ITNOA


<!-- TOC -->

- [ITNOA](#itnoa)
  - [Hooshang](#hooshang)
    - [Kamal](#kamal)
  - [Zooom](#zooom)

<!-- /TOC -->

salam

## Hooshang

Che khabar

### Kamal

kamalam ladlfasdf akjdf;adslkfja;dlkfj

## Zooom

Chakar mikoni

2. Second if you right click and click Add markdown TOC: Insert/Update
3. Third you can see below

<!-- TOC -->

- [ITNOA](#itnoa)
  - [Hooshang](#hooshang)
    - [Kamal](#kamal)
  - [Zooom](#zooom)

<!-- /TOC -->

salam

## Hooshang

Che khabar

### Kamal

kamalam ladlfasdf akjdf;adslkfja;dlkfj

## Zooom

Chakar mikoni

[soroshsabz]

• related to Ignore option does not work #40
• related to TOC ignore:true #58

[soroshsabz]

@huntertran do you can see this issue?

Or some helping to How can I debug and resolve this bug and make PR for that?