Google analytics tag manger return multiple of GA-ID

[DoHaiSon]

Acknowledge the following

• I carefully read and followed the Getting Started guide.
• I read through FAQ and searched through the past issues, none of which addressed my issue.
• The issue I am raising is a potential bug in al-folio and not just a usage question.
  [For usage questions, please post in the Discussions instead of raising an issue.]

Describe the bug
Hi there, this is not a bug of al-folio, but I want to know what happened with my Google Analytics.
The bellow script corresponds to my GA id:

src="https://www.googletagmanager.com/gtag/js?id=G-F4TYWWTYBS"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-F4TYWWTYBS');
</script>

For sure, I checked it's correct. But the returned values of this API: https://www.googletagmanager.com/gtag/js?id=G-F4TYWWTYBS is a list of GA ids. So, the below GA IDs are added to the pages of my website:

<script type="text/javascript" async="" src="https://www.google-analytics.com/analytics.js"></script>
<script type="text/javascript" async="" src="https://www.googletagmanager.com/gtag/js?id=G-9ZS5RQLF5L&amp;l=dataLayer&amp;cx=c"></script>
<script type="text/javascript" async="" src="https://www.googletagmanager.com/gtag/js?id=UA-218922207-1&amp;l=dataLayer&amp;cx=c"></script>
<script async="" src="https://www.googletagmanager.com/gtag/js?id=G-F4TYWWTYBS"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-F4TYWWTYBS');
</script>

I checked that UA-218922207-1 and G-9ZS5RQLF5L are two different GA-ids in my GA account, but I don't want them to be here.
Because the analytics are randomly separated into 3 IDs above.
For example, any traffic to this page: https://dohaison.github.io/InSI/, is pushed into this ID: UA-218922207-1.
And the rest of the traffic to https://dohaison.github.io/ is randomly pushed into G-F4TYWWTYBS and G-9ZS5RQLF5L.

I tried removing both ID UA-218922207-1 and G-9ZS5RQLF5L from GA, but the googletagmanager API still returned them.

Expected behavior
Just use 1 GA ID for everything.

Thank everyone for reading!!

[stale]

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