Captions (subtitles) keep disappearing from screen

I work as a professional captioner for many clients that use Zoom. For the past several weeks, I've noticed an issue with Zoom in which if the Show Subtitle option is turned on, the captions will sometimes disappear from the screen way too soon. Sometimes the caption only appears for a split second and immediately disappears, giving the viewers absolutely no reading time. This issue seems to occur more often towards the beginnings of meetings, when the presenter screens switch around a lot. I also have a theory that incoming chat messages may be causing the captions to blink off the screen.

Please fix this!