Unwanted selactable text

Hi all,

I imported a presentation from PowerPoint to Captivate 2019, and continues editing with Captivate (added slides and also changed some). On publishing (this happens as well in preview) when one left clicks on the text it shows the outline of the textbox. This only happens with the slides imported from PPT. Tried different browsers .. It happens on Edge and Chrome but NOT on Firefox. Any ideas plase?