Show error when paragraph composer cannot render lines
All too often, I run into text that doesn't render because of some feature of the text (unsure of all cases, but examples are words that exceed the line length, common in some languages and in URLs). I have a stable of techniques for dealing with these issues, but most usually I'm poking around in the dark: the lines I'm trying to fix are not visible in InDesign; I don't know what exactly is offensive (e.g., Chinese lines were usually things work, but sometimes they don't); and the offending text might have gremlins from the source text that are not rendered in InDesign even when I can see them.
It would get great if InDesign had an option to 1) show the error/reason that the line couldn't be rendered, and 2) to force render the line so that users are not guessing at fixes, or what I often do, throwing text into a basic text editor to attempt to clean the source text (which is a 50-50 or worse solution).
FWIW, I see these errors most commonly in Chinese text, and perhaps most issues could be solved with a default Chinese dictionary. How I solve these Chinese issues can be bizarre, however: technique #1, adding spaces between words, then kerning out the spaces; technique #2, adding tab characters at the end of the paragraph (not even sure how I figured out that one!)
One thought here would be to provide an option to render overset type within the Normal screen mode. Or to add a more specific error to the Preflight panel (e.g., sure its overset, but not because the frame isn't big enough, so what is the problem?)