Patches for Unity Editor can be downloaded at usual place: Future Unity versions are expected to switch to it anyway. If you encounter more issues with Monodevelop on macOS 10.13 it's recommended to manually install Visual Studio for Mac and use it for script editing. These versions include multiple fixes for disappearing assets on APFS, Unity Editor and Monodevelop crashes.
5.5.5 patch 2 or later (install Visual Studio for Mac for script editing) MacOS 10.13 High Sierra upgrade recommendation: upgrade with careįor macOS 10.13 support you have to upgrade your Unity Editor to one of these versions: Current macOS 10.13 High Sierra support summary: