Display Logic not functioning consistently

Hi all. I have display logic set up to show one of two questions, depending on which of two answers a participant select for the prior question. The dependent question appears on the same page, once an answer is selected. I am testing out the survey, and the dependent question is only showing up sometimes. I click on an answer to the question that triggers it, and maybe the dependent question appears. I switch to the other answer, and maybe the other question appears. But often when initially selecting an answer, or going back and forth between answers, no dependent question will appear. Any ideas? Thank you!