Hyperlinks in custom fields

I have defined several custom fields as "rich text". However, when I try to populate the field for given property and make it like this:

Please find HVAC operation Info <-- this is supposed to become clickable hyperlink when I define it in custom field value. When select the text and then I click on hyperlink icon in order to add hyper link, there is a blank popup and nothing else. I can X out of the popup but I cannot add the hyperlink

Sorry for the delay in responding. We had identified a browser issue where our pop-ups for things like changing links or editing raw html stopped working. We just released an update this morning that upgrades those editors to a newer version. You should now be able to edit links and html fine without getting those blank pop-ups. This should be the case throughout the system - for instance , when composing email too. ~Sam