First of all, congrats for the new interface of the new Barinsta. It looks professional and it's a significant improvement over the previous version. I have a few more suggestions based on v19.0-a2 besides those older suggestions that you considered:

1. Add an option at settings to make the bottom navigation bar fixed or auto hidden.

Instagram has deprecated its developer API. Review its usage in this project and possibly migrate to the new API.

Tree-shaking class methods in general is a difficult task (example). It would be great to rewrite this library on to simple functions since they're much easier to statically analyse.

So instead of loading 2.3Kb JS, you will get small 300-500b functions