Adobe Captivate Classic not showing text boxes, buttons or bookmarking

Any idea why, after publish to SCORM 1.2, some slides are not showing text boxes, buttons or bookmarking in SAP Successfactors? Even in the flimstrip, or canvas, I'll see an empty slide, and only if I click throughout the canvas, then I can finally see the text boxes. This is happening to old projects from a previous version of Captivate that have been updated, as well as new projects made directly in the version I have. I'm using basic animations (fade in, occasionally a fly in) and basic, web friendly fonts (Calibri, Tahoma, and Times New Roman). These projects are also taking 40+ minutes to publish, but don't have more than text, audio, and continue buttons.