Behavior tags works best on languages that are alphabet-based with spaces between words. Hence, this feature is unreliable for logographic languages such as Chinese Mandarin, Japanese, Korean, and Arabic which use a pictorial symbol to represent a whole word and do not have spaces between words.
Word based tags
For example, if you have a behavior tag involving "火曜日", it will not work if this is a word within a longer sentence.
Sentence based tags
However, behavior tags for these languages will work for whole sentence-based behavior tags.