Fixed in version 1.1.5
It can happen that vegetation does not render correctly in a build or that the entire screen is black. This happens when using a Scriptable Render Pipeline (LWRP, URP, or HDRP) and building for an AOT platform.
Some of the render code can be stripped from the build, causing the rendering to run into an exception.
[Update: 20 December 2019]
We have identified the problem and created a solution. A new update will be published soon with the fix. If you are in a hurry, please contact us and we'll send you a preview build.
[Update: 27 December 2019]
Version 1.1.5 released with a fix for this issue.