We are currently running version 7.3.2 and have discovered that opening the bookmarks tab crashes the viewer. I have bumped us up to the latest (7.3.4) and the issue is still there. I have also tried on the demo site and it seemed to work normally there, but I noticed that the demo site appears to be running v7.3.0. I then tried running 7.3.0 locally and it worked properly. So I suspect the bug was introduced some time after 7.3.0.
This is the example of the errors showing in the console:
Uncaught TypeError: n.getIndex is not a function
at Object.getPath (webviewer-ui.min.js:50)
at Object.getOutlineId (webviewer-ui.min.js:50)
at webviewer-ui.min.js:50
at Array.map (<anonymous>)
at webviewer-ui.min.js:50
at $i (webviewer-ui.min.js:34)
at Ra (webviewer-ui.min.js:34)
at ml (webviewer-ui.min.js:34)
at us (webviewer-ui.min.js:34)
at ls (webviewer-ui.min.js:34)
Please make sure you have swapped out all assets correctly (including the UI) - I am loading 7.3.5 and it is working just fine for me with both PDFs you sent over.