A lot of apps have A/B testing going on which makes updating this field difficult.
Not really.
"""
Fix bug where sync could fail in Android 7 devices
Also, for a few users we rolled the following experimental changes:
* X, Y and Z
"""
Discord has been really good with their changelogs but their changelogs in app stores are not as good as the ones in the beta channels. I liked their transparency when they introduced tabs in their Android app.