BUG: 302784 FIXED-IN: 4.9 REVIEW: 105394
BUG: 302101 FIXED-IN: 4.9 REVIEW: 105297
Without default values readConfig returns undefined values causing the effect not to work. This needs to be documented.
Our first effect written in JavaScript to replace an existing C++ effect. Fade effect has been chosen as it has shown to be problematic in the past and would have needed a migration to AnimationEffect anyway.