3.30.3, Locus Store:
The "My history" and "My subscriptions" screens are empty. I don't have subscriptions, so that's fine (although I would prefer some kind of "You have no subscriptions" text), but I definitely have a history.
Everything else in store seems to work (e.g. Check for updates, Buy LoCoins, etc.). I also had a case where after clicking a few things in the Store, I suddenly couldn't get out of it anymore (clicking back arrow/button didn't take me back and in the end I had to kill Locus), but I can't reproduce it now.
But the empty history is definitely a bug.
PS: Works on my S5neo (stock Samsung ROM), but not on my Note4 and S4 (both LineageOS) - so perhaps something with the OS? All have working Google Apps, though, and as I said, everything else in the store works fine.