Power Automate visual not loading

I see some other comments that some have figured this out.  If you have PowerBI Services Online, you can publish your PBIX online and then edit the PowerAutomate button functionality within that online session by pressing the edit button in the toolbar at the top of your dashboard:

If you do this, you'll have to go to "File > Download this file" to get it back to your computer:

No doubt this is a pain, but it's better than being dead in your tracks until it's fixed. Remember that if you modify the file on your computer it's now going to be different then the online file and vice versa, so you pretty much have to redownload the file everytime you make a change.  Hopefully they get this fixed soon!

BTW, I've actually found that editing your Power Automate flows in a separate browser window is way better as your window frame can be a full size window as opposed to being boxed into PowerBI. 

Hope that helps.