I'm early on in the process of installing the CoE. When copying/saving the flows provided in the default solution, all are copying across except the two which use the "Power Automate Management" connector. Both have "invalid connection".

When clicking on the ellipses, the menu shown just flashes up for 1/100th of a second, there's no option to actually set a new connection. I had to use video capture and replay it back in super slo-mo to get the above image.
The account is a global admin and has an Automate license.