When i type url without connection type - http version is used

[Nyanraltotlapun]

Firefox 70.0.1
Manjaro Linux XFCE

When i type url in the form of "wumo.com/wumo", for example, http version is used.

Also.
When i type - wumo.com/wumo
I get drop down menu with different suggestions
One of which is "https://wumo.com/wumo".
I use keyboard to chose this menu item, and press enter, and I then directed to http version of the site.
When I disable addon this is not happening - browser loads https version.

[Rob--W]

I cannot reproduce this issue, Firefox 70.0.1, also on Linux.

The extension only modifies http requests. If you're selecting a https:-URL and end up at a http:-URL, then it is not caused by the extension.