What is Joplin built/running in?

Looks like there’s no error? If the issue was that app wasn’t starting please try again with the latest version in GitHub.

Just tried with the latest GitHub build, still no problems with starting, the issue is that it’s still an empty window with the default toolbar https://imgur.com/a/Q8hBQr2

In BUILD.md it says to set debugEarlyBugs to true, did you try this?

I did not originally, however after trying it, it appears to make no difference.

I did not originally, however after trying it, it appears to make no difference.