That would be quite sad, but save issues from the development phase to the full game are to be expected and ultimately the final builds are what really matters.
Anyway, regarding this build, 0.4, I don't see a changelog, so I can only talk about what I have seen,
The gymleader in Petalburg, when talked to after all quests are done has dialogue that starts with "Dad:" I know this is temporary, but it's still really silly.
In Dewford, I took a quest to apparently give a new trainer a reality check in route 106, but there's not a soul in that place. Not in the cave, either. Is it somewhere on the water? But surf is not a thing yet, right?
There's currently no way to progress past Rustboro/Dewford, right? All that seems to be left for me to do at this time is the end of the Marowak quest line in Route 116 and I doubt that's gonna be a major progression key.
When I check the bed in the player character's home, it gives me the option to "reset all interactions". That sounds scary, what exactly does it do?
Is it really necessary for the "Special" Pokémon to have separate dex entries? Especially since there seems to be no way to actually fill that entry and they are just called "Ralts" "Vaporeon" etc. there, not something like "Special Ralts".
I see people talk about eggs and I see the "dating sim" mechanics with a bunch of NPCs and the special Pokémon, but there seems to be absolutely nothing I can do with these as of now EDIT: I didn't realize you can buy flavoured candy in the store, I expected it to be some berry-based system later on. This locked me out of a lot of content.
And is fixing the berries really not just a matter of copying the events from the gardens to the right of Petalburg to all the other fields?