Hi Greg, I've not seen this issue yet. Have you tried checking the Developer console from the web browser to see if there's any error/warning or if there are any sort of delay over the network to load the UI components? Also would be helpful to check the Application log.
BTW, with ThingWorx 7.4.0 you may want to check as there's an issue reported around the property binding failing to persist, detail is covered in the knowledge base article
Thank you for your reply and suggestions. I have not thought to view the Application log, I'll have a look at that the next time I see the issue.
From the general lack of other folks reporting the issue I imagine it may be something unique in my environment.
Regarding the property binding issue I haven't had any issues there so I'll assume that is a separate issue.