We deployed the Growth features to Serbian Wikipedia in T241181: Deploy GrowthExperiments on Serbian Wikipedia. At that point, we realized that visual editor is not available for users in that wiki except for when they have explicitly enabled the preference. In addition to generally wanting Serbian users to have the visual editor, this matters for Growth features because our future plans (such as for guidance) expect that wikis will have visual editor available.
In this task, we want to look into the issues that are keeping visual editor from being available and decide if, when, and how to address them.
Relatedly, here is a link to a discussion on Serbian Wikipedia about whether users there want visual editor available.