tullis opened a new issue, #25235:
URL: https://github.com/apache/superset/issues/25235
#### How to reproduce the bug
1. Go to any page on your Superset instance
2. Right-click the page and select 'view-source`
3. Scroll down to view lines 60 to 68
4. See the following (with actual token redacted).
```
<input
type="hidden"
name="csrf_token"
id="csrf_token"
value="redacted_token"
>
</head>
<body >
```
5. Review the upstream source code:
https://github.com/apache/superset/blob/master/superset/templates/superset/basic.html#L66-L74
### Expected results
I would expect to see the input field within the `<body>` of the page.
### Actual results
This `<input>` field is rendered within the `<head>` element instead of the
`<body>` element.
#### Screenshots

I also pasted the source code of the page into the WSC validator at:
https://validator.w3.org/
This reported that a stray end of `head` and a stray start of `body` were
detected.

If I manually moved the `<input>` for the `csrf_token` down to below the
start of the `<body>`, these two validation errors went away.
### Environment
Despite modern browsers dealing with the misplaced input tag, we have also
had reports of blank pages being generated by older browsers. I will update the
ticket once we know which browsers fail to render properly.
We have tested various Superset version and browsers, so the following
information isn't very relevant. The
- browser type and version:
Firefox 116.0.2 (64-bit) on Linux
Chrome Version 116.0.5845.140 (Official Build) (64-bit) on Linux
- superset version: `1.5.3`
- python version: `3.9.2`
### Checklist
Make sure to follow these steps before submitting your issue - thank you!
- [x] I have checked the superset logs for python stacktraces and included
it here as text if there are any.
- [x] I have reproduced the issue with at least the latest released version
of superset.
- [x] I have checked the issue tracker for the same issue and I haven't
found one similar.
### Additional context
Note that this was first reported by a user here:
https://phabricator.wikimedia.org/T337563
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