Flexible Layout Dashboards problem 7.3 SP1.1

Just upgraded from CRM 7.2 to CRM 7.3 SP1.1, integrated with Sage 100 Advanced ERP2016. Dashboard templates created in prior version worked fine, until I tried to add a gadget. All use the Flexible Layout and most consisted of two or even three rows of list gadgets.

Now when I leave the current template (looking just as I want it in 2 or 3 rows) and return, all the gadgets are stacked on top of one another in a single row. No matter how many times I rearrange them they will not save unstacked. I removed the last gadget to be added, no change I deleted the gadgets in the 2nd and 3rd rows and added just one back in a 2nd row position; it ends up stacked on top of the first row.

And yet new gadgets ARE being added, and if I string all the gadgets in a single row I can show them all. For obvious reasons that is not going to be helpful to productivity, however.

Restarted IIS and Tomcat, same behavior. Has anyone else seen this? Any suggestions?