I can see that you are currently in discussion with our team via the ticket #02683306.
If you are willing to, please let the community knows about the solution!
Lénaïc RIÉDINGER, Global Community Engineer Tableau
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One of the three was fixed by upgrading our server version to 10.1.4 (it was the latest at the time we did it).
The other two were fixed by adding style='display:none;' on the tableauViz object where height and width are set. This is provided in the share button off the portal but was omitted when it was embedded in the web page. Starting in Chrome v56, omission of that style results in an endless spinner, and is likely by design with the enforcement of more standards in Chrome v56.
At this point all of our embedded visualizations are working again in all browsers. Noah from technical support did an excellent job in identifying the problem and getting a resolution in place!