After build Index.html has different path to libraries or no library at all

Hello there

I have the following issue.
In my project index.html file i have all the paths needed for my project.
i have also included in the project the path library files.
When i compile the project in the compiled index.html i have different paths.
A sample

exists in project html but disapears in build html.

after build links to a library in CDN

Please advice...(because i have to change the compiled index.html file after compile to work).

I'm not sure what you mean here.
The only operations done with index.html are replacing $(ProjectName) in

<script type="text/javascript" src="$(ProjectName).js"></script>

and replacing (BodyParameters) in

<meta $(BodyParameters)>

Other than this, our tooling does not changing anything in the HTML file.

well something makes changes

for instance index.html in project

<link href="data:;base64,=" rel="icon" />
<script src="./template/vendor/jquery/jquery-3.5.1.min.js" type="text/javascript"></script>
<link  href="./template/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet" />
<script src="./template/vendor/bootstrap/js/bootstrap.bundle.min.js" type="text/javascript"></script>
<link href="./template/vendor/datatables-plugins/dataTables.bootstrap.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" type="text/css" href="./template/vendor/font-awesome/css/font-awesome.min.css" />
<link href="./template/vendor/metisMenu/metisMenu.min.css" rel="stylesheet" />
<link href="./template/dist/css/sb-admin-2.css" rel="stylesheet" />
<link href="./template/vendor/morrisjs/morris.css" rel="stylesheet" />

<!-- Tabulator -->
<link href="./template/vendor/tabulator/css/tabulator.min.css" rel="stylesheet" type="text/css" />
<script src="./template/vendor/tabulator/js/tabulator.min.js" type="text/javascript"></script>
<script src="./template/vendor/luxon/luxon.min.js"></script>
<title>bla bla bla

after compile

<link href="data:;base64,=" rel="icon"/>
<link href="./template/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet"/>
<link href="./template/vendor/datatables-plugins/dataTables.bootstrap.css" rel="stylesheet" type="text/css"/>
<link href="./template/vendor/metisMenu/metisMenu.min.css" rel="stylesheet"/>
<link href="./template/dist/css/sb-admin-2.css" rel="stylesheet"/>
<link href="./template/vendor/morrisjs/morris.css" rel="stylesheet"/>
<!-- Tabulator -->
<script src=""></script>
<link href="" rel="stylesheet"/>
<script src=""></script>
<script src="SIR.js" type="text/javascript"></script>

as you can see some are ok , other disapear , other change.

what is happening

I have no idea. Our code isn't changing this during compile.

and where it finds cdn path for tabulator.

What components do you use?
None of the standard TMS WEB Core controls use Tabulator.

Is there perhaps a post-build script that is running that is updating the contents of the build version?

Check in Project | Options | Building | BuildEvents and see if there's anything defined in there?