Service call to domain restricted?

I categorized this as a bug. It may or may not be an issue with Glide. Here’s my situation.
I use the shrinktheweb service to provide thumbnails of URLs for my portfolio. I have one URL to a URL where shrinktheweb is able to do its magic and the thumbnail renders perfectly. However, for a second Glide app, shrinktheweb is unable to do its thing and instead renders “Broken URL / Domain”. There is no discernible difference to the way I am calling shrinktheweb. The only think I can think of is that there is a new restriction added by Glide for calls to its domain from 3rd parties. (Perhaps caching somewhere is allowing the first app’s URL to continue to “work”.) The 2 Glide URLs are:

  1. <- works great!
  2. <- gives me the shrinktheweb error
    Anyone have any ideas? Thank you!