SharePoint Online - calculated column no longer showing as hyperlink

Kelly Dungate with SharePoint online or SharePoint 2019 is not needed because you can format a column as following:

{
"$schema": "https://developer.microsoft.com/json-schemas/sp/column-formatting.schema.json",
"elmType": "a",
"txtContent": "@currentField",
"attributes": {
"target": "_blank",
"href": "=@currentField"
}
}

Here is the official fix, at least for on-premise:

# NOTE:  =$False  NOT  ="$False"
# In SharePoint 2016 Management Shell, run...

$Web = Get-SPWebApplication http://weburl
$Val=$Web.CustomMarkupInCalculatedFieldDisabled=$False
$web.update()

# To confirm it is now false...

$Web.CustomMarkupInCalculatedFieldDisabled

Using js-link to fix the problem. No need to change the calculated field. Here's what I came up with: 

We are also facing the same issue.The formula column is displaying plaintext value instead of hyperlink HTML. This was working till tuesday but from yesterday it has suddenly changed. We are working on Office 365 Sharepoint online site. Does any updates implemented by microsoft?

This is crazy. I'll have to create JS link templates for a whole bunch of lists if they don't rollback. Are Microsoft going to pay me for this? wtf

Jupp, this is totally frustrating. We are using calculated columns to buil useful links and now they are broken. 

I find it strange that MS did this change so fast with minimal warning. I would guess a lot of people use custom markup in calculated fields. 

So what if it's not supported, it is highly used so insted of blocking it, they should work on a cool solution to replace it and suprise us insted :-) 

Yes, unfortunatelly MS has done it again: https://support.microsoft.com/en-us/help/4032106/handling-html-markup-in-sharepoint-calculated-fields

The change has rolled out the same day the news about it was published :(

Although there should be a possibility to request an extension through September 10, 2017. I have no ide how to request it... :D