Engage interactions display incorrectly in Storyline 3

When my SL 3 course plays back the imported Engage interactions all have a dotted line around them (see image submitted). If I click on the Menu bar or any player controls the dotted lines disappear. If I revisit any slide that is an Engage interaction, the dotted lines appear again. This is seen in the IE 11 browser, and not in Chrome. Anyone see this before and know what is a solution?

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