We did just recently release rc26 to try and address a large number of issues we were seeing with Mesh reliability. That we can tell, many of them did what they were supposed to. With that said, we do recognize that we did not address all issues that users were having with Mesh.
Your issue sounds like it might be the documented “SOS 7” issue. In particular, when the device flashes red, it can flash an SOS pattern with a number of flashes after. You can see this detailed in our docs here.
This issue is acknowledged on our main topic for mesh issues at number 7.
Our firmware team is digging into this further and we hope to have some more information soon on next steps on how to proceed with this issue.
I want to assure you we are far from finished in releasing mesh updates. rc26 isn’t our last, nor will rc27 be. We are determined to keep iterating, getting feedback, and implementing fixes as needed until Mesh is stable and production ready.