I have exactly the same issue as described by Ondřej Bílka on this thread:
Since the discussion was closed I'm trying to reopen it again.
All my files are in UTF-8 and just the dinamic fields are wrong - I have one 'message' field with all the data and on that field the special characters are ok.
I wish you good luck and if you will figure anything out, please let me know..
On the other hand I think that "webalized" string keys are much more secured because of possible encoding issues in another parts of application.
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