Thanks for the file. Could you upload the file before translating as well? So, just the 100% English file? The one you've uploaded is half translated (as you mention), which makes it less useful for troubleshooting.
(But even with this file, I do seem to be able to replicate the issue. Unfortunately, it's almost certainly a bug with DeepL rather than with our Translate script, but I'll be able to tell better once I have the original English file.)
Thanks!