No, IE and Edge have been a moving target in some regards, and we keep having to fix that page to properly recognize Flash on Win10. I have a request in to get it fixed.
If you're running into problems with Flash not working in IE and Edge on some content, the following advice should help get you going:
First, confirm that ActiveX Filtering is configured to allow Flash content:
You can try to work around these issues by using Compatibility View:
If that is too inconvenient, using Google Chrome may be a preferable alternative.
Actually, our testing indicates that it works as expected with current builds of Flash and Edge.
Have you run Windows Update recently? Make sure that you have all the latest patches applied.
Please let me know if that fixes it for you. If not, I'd like to collect some more information to help track this down.