Descriptive Problem Summary:
Unicode/UTF-8 characters put into json_encode will not be properly escaped.
If the same characters are piped into world.log, they'll display (mostly) correctly in Dream Daemon.

Numbered Steps to Reproduce Problem:
1. Put unicode into json_encode
2. See output
3. Compare to, say, CyberChef's Unicode Escaper: https://gchq.github.io/CyberChef/

Code Snippet (if applicable) to Reproduce Problem:
(it's on pastebin because the forum auto-escapes the unicode) https://pastebin.com/6TRzZdea

Expected Results:
["\u0bf5\u06e9\u010d\u0161\u011b\u00ed\u00fd\u010c"]
Actual Results:
["\u00e0\u00af\u00b5\u00db\u00a9\u00c4\u008d\u00c5\u00a1\u00c4\ u203a\u00c3\u00ad\u00c3\u00bd\u00c4\u0152"]

Does the problem occur:
Every time? Or how often? Every time.
In other games? It's game-independent

When does the problem NOT occur? If I just put normal ASCII into json_encode/decode

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? It didn't occur in previous versions, because previous versions didn't have UTF-8/Unicode support at all.

Workarounds:
Don't use Unicode in json_encode/decode