If I got him right, Werner is currently tackling this issue.
most likely a python3 problem. I guess it will take some time until everything runs with py3. But normally the issues are not that difficult. So we get there step by step.
I guess the high resolution difficulties are general mac problems. So not something specific to the conda-packages. Anyway it would be nice to fix them.
Indeed, the resolution is an application issue, not the build. Win10 is also supporting hiDPI screens. So the multi resolution is less and less a MacOS only issue. I am happy that someone is already looking at the issue.
Werner’s high DPI topic: https://forum.freecadweb.org/viewtopic.php?f=10&t=34916.