Really love Zim wiki and have been using it for over a decade. Sadly, the move to py3 and gtk3 broke it for non-linux platforms. macOS how has a huge wealth of [reported] bugs that break common keyboard shortcuts at the OS level and introduced a lot of performance problems. This isn't the fault of Zim as these are all bugs from gtk3 where it seems like the priority for non-linux bugs is 0. Meanwhile, Windows no longer has a prepackaged installer as the maintainer stopped doing that post transition.
I've tried hacking my way around this but to no avail. It's gotten to the point that I've finally started seriously looking and testing alternatives. Nothing has come close to replicating the feature set and UI workflow.