Slide Previews and slide text are not shown in Theodul Engage player

Steps to reproduce: 1. Ingest a video as presentation 2. Run full workflow including slide detection and OCR 3. View the result in Theodul engage player    Actual Results: Slide Previews and corresponding slide text are not shown in most cases, only sometimes (unable to reproduce this behaviour!)    Expected Results:  Slide Previews and corresponding slide text are shown ALWAYS.    Workaround (if any): Replaced the following code fragment in main.js of module matterhorn-engage-theodul-plugin-tab-slidetext-2.2.1 (line 157 ff.): ...                 if (segmentInformation !== undefined) {                     $(segmentInformation).each(function(index, element) {                       if (Engage.model.get("videoDataModel") && Engage.model.get("videoDataModel").get("duration") &&                               element.time <= parseInt(Engage.model.get("videoDataModel").get("duration"))) {                         var segmentText = "No slide text available.";                         if (element.text)                             segmentText = element.text;                                                  var segmentPreview = undefined;                           if (element !== undefined && element.previews !== undefined &&                                 element.previews.preview !== undefined && element.previews.preview.$ !== undefined) {                             segmentPreview = element.previews.preview.$;                           }                         segments.push(new Segment((element.time / 1000), segmentPreview, segmentText));                       } else {                         Engage.log("Tab:Slidetext: Detected Segment with start time " + element.time / 1000 +                                 " that exceeds the duration of the video ");                       }                     }); ... with the code from 2.1.1: ...                 if (segmentInformation !== undefined) {                     $(segmentInformation).each(function(index, element) {                         var segmentText = "No slide text available.";                         if (element.text)                             segmentText = element.text;                         var segmentPreview = element.previews.preview.$;                         segments.push(new Segment((element.time / 1000), segmentPreview, segmentText));                     }); ... Now it's working!!