IonicModule.forRoot(getConfig()) setting in app.module.ts
It works fine until 5.1.1 version.
But, It doesn’t work after 5.2 version update.
There was no breaking change guide, it seems like a bug.
I was created a custom animation in the navAnimation config and it worked fine from 5.0.0 to 5.1.1
I think that it was affected by animation changes related to #21433
It was a very good idea to change the animations that can be set for per page.
But, I think that adding custom animation to global settings should work by default.