Chrome 97 DevTools Suddenly Displaying Styled Components? - google-chrome

Chrome v97.0.4692.71 is suddenly displaying the following styled component tag as the last line in the <head> section of every web page:
<style data-styled="" data-styled-version="4.4.1"></style>
Does anyone know why this is being displayed? This only happens for publicly-accessible web pages, not web pages in my localhost website dev environment. I've checked this on other non-development machines that I own and the above tag is not being displayed.

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Font not displaying properly when website uploaded to live hosting

I am trying to create a simple html landing page using bootstrap.
When I open it using google chrome locally, everything is displaying fine.
However, when I upload the page to my hosting, the font suddenly starts displaying weird symbols for my language (see picture).
Do you know where the problem could be?

Firefox 51 fails to load img data via ftp

I have just stumbled across some behavior that looks weird to me.
There is a small static test page on my webserver that has the following code:
<html>
<body>
<a href="ftp://my-ftp-server/t.jpg">
<img src="ftp://my-ftp-server/t.jpg"/></a>
<br>image
</body>
</html>
When I load the page in Firefox 51, the image on the page is shown as broken. In the standard Firefox developer console I do not see any requests (well, it is an FTP request, so not surprising it is not shown in HTTP requests list).
When I click on the image box, the image loads correctly.
What I checked so far:
Both links are identical.
The page opens in Google Chrome 56 correctly.
When I change the image data link from ftp to http (the ftp server is accessible via http) the page loads correctly in Firefox.
This does not seem to be a caching issue (clearing the cache does not resolve it)
There is no AdBlock or similar add-ons installed.
Developer console shows "Could not load the" tooltip when mouse hovers over the image link.
What could be the reason for Firefox 51 not displaying the image with data accessible via FTP?
Details: This is Mozilla Firefox 51.0.1 built for OpenSUSE Leap 42.1. So far I could not reproduce neither on Google Chrome, nor on Firefox 50.1.0.

iOS - HTML source is different than when inspecting element in Chrome on desktop

I am trying to get the html of a website to put in my iOS app. When I log the html from an NSData variable through an NSURLConnection, the html is different if I then went to the website on my desktop and clicked inspect element on the element that I am trying to find in the iOS html. Why would it be different? Is it because I clicked specifically on that element? It looks the same on iOS and the desktop because I have it loaded into a UIWebView.
Update: I have been told that in Chrome it is the rendered source code. How can I get the rendered source code in iOS?
In Chrome's Developer Console, it's showing rendered source codes (after AJAX and extension's modifications). Code mistakes (such as unclosed tags) will be fixed too.
It's NOT your original source code.

Flicker in IE11 on page load, but not in developer mode

I'm getting flicker on page load or postback of a coloured page body in IE11, on externally hosted site (ie. not from local disk).
The odd thing is it goes away if I either:
Open F12 developer tools
Add the site to trusted sites
Add the site to restricted sites
I've got a VM with IE9 which works fine. Works fine on Chrome.
I obviously cannot use any of the above as a solution!!!
This sample code has one link that switches between two pages. I've removed everything else, javascript, css files etc.
--- page1.html ---
<html>
<body style="background-color:#000000">
Page 2
</body>
</html>
And then an identical page2.html that refs back to page 1.
Clicking on the link flickers the background from white to black each time, unless using any of the "fixes" above!
I have found another way to temporary fix this bug by adding an empty event handler through JS.
link such .js file to you html
fix_ie.js:
if(window.addEventListener){
window.addEventListener('beforeunload', function(){});
}

Anchor href not working after site is deployed to Win 2012

We just deployed a site onto Windows 2012 (I'm not sure if this is relevent or not). We have a page that contains links to a page that should open in another window.
<a target="_blank" href="../downloader.aspx?ik=3431158">notes.txt</a>
Pretty basic! This code has been in production for over a year and it works as expected: click the link and the downloader.aspx page is opened in another window or tab. We are now testing the site on Win 2012. Without changing anything on this page, it is not working in the test environment.
Other facts that might be relevent: we are using a ModalPopupExtender, the popup is hosting an iframe and the links are on the page in the iframe.
After deploying to Win 2012, this is no longer working. We have tested in IE, FireFox and Chrome - no luck in any browser.
As a workaround, I've added some JavaScript code to handle the click and call window.open() and I get the results I expect.
Has anyone seen this before? Why would a simple href just stop working?
Edit: Pasted the View Source at http://pastebin.com/Z0qv1gY0