Is there a recommended way to save a figure in makie, akin to using savefig in Matlab as a “.fig” file?
No, because Makie figures contain lots of references to anonymous functions etc. due to observables and the compute graph and these don’t behave well under serialization. You could try if you can reload a figure serialized in one session with Julia’s default serialization, but I assume it won’t work well, or break at the slightest underlying change (Julia patch version, any package version change).