ISSUE:
For at least a week or so, I've been having an issue where clicking on a an image in a guide to expand it will give the error: "Sorry! An error was encountered while processing your request. Invalid URL."
Right clicking + open in new tab does not give this error. Also, the problem does not occur in my browser (Firefox).

OS:
Windows 10

STEPS:
- Go to a guide with an image that was embedded through Steam's direct upload feature.
- Click the image

RESULTS:
Opens a window with the error mentioned above.
Here is a screenshot of the error[i.ibb.co]

EXPECTED:
Should enlarge the image.