URI Scheme forced https

Hi

Viber and Wechat text is replaced with https every time I update the page. Same thing happens in the backend.

e.g.
viber://contact?number=359899122121
https://contact/?number=359891232121

weixin://dl/chat?username
https://dl/chat?username

Tried disabling plug-ins and clearing cache but still the same.

I have seen sites using the same uri scheme/deep link for their buttons and it works just fine.

Thanks

Hyperlinks to external urls getting replaced to https

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