nomadic+consultant,
Since the note is immediately attaching incorrectly, it sounds like this is the sort of thing where you want to submit a problem report.
One random thing that I would check is whether your language has any composed/decomposed characters, where multiple characters or keystrokes become a single unicode character. The wordlist and other tools have sometimes had issues with identifying words depending on the setting of composed/decomposed characters. That’s just a random guess based on my experiences.