Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
Install host dependencies.
Import toolchain and SDK.
Create, configure, build and manage apps.
Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench
Not sure if this will help you ... I use latest version of Workbench with Eclipse Photon on Mac 10.14.1 and have no instability. I have two (large) projects, using different boards from STM32CubeMX generated projects.