CFAI question Bank -topics covered vs not covered

Hello. When we do the questions from the cfai question bank topics, it seems like there are topics that are covered in the syllabus but do not appear in Qbank. Let’s say “I spread” is in the syllabus, but it does not appear in the learning Q bank.

Is that a risk in not covering those topics? I would appreciate getting feedback from candidates who solely focused on cfai question bank and passed the exam.