Search goes to a non-https page displayed in an iframe on my home server. In general, this can be unsafe, so it is blocked by default on most browsers. To enable full-text search of past issues, do the following:
In Google Chrome:
Look for the warning shield in the URL bar
Click it and then agree to load unsafe scripts.
Firefox will not display the unencrypted link unless you do the following:
about:config in the address bar and set
You can reset this value to true when you are finished searching.
In Microsoft Edge
Click on the icon with the heart to allow the iframe to be displayed
The search GUI may be displayed more nicely if you adjust the window size.