In most translations, a space is missing here. The first character of this translation string should be a whitespace, but currently a whitespace do not seem to be accepted in this translated string.
Just two examples:
Correct:
Wrong:
This still seems to be a bug, but this is (at least) the temporary solution:
Probably fullwidth parentheses must be used:
Fullwidth → “（）” (correct)
Halfwidth → “()” (wrong)
Thanks again @currycooqoo for this great tip. 