Issues with timeline and objects with slide background fill
I'm having an issue with my interaction; namely, the idea for interaction is to show a circle filled with the background fill above the black slightly transparent shape in order to highlight some parts of the image at a time. It seems to be working only for the first 8 seconds of the timeline. No matter how I move my objects on the timeline, any object that is partially or fully behind 8th sec of the timeline is just with no background colour. I adjusted the timeline in the slide master but it doesn't help. Does anyone have an idea what might be causing the issue?