Love the game and is great to play. In my runs I ran into a few issues.
Issue 1 The maids can be bought on any day ( not sure if intentional or not since it claims to be every 7 days in game)
Issue 2 After buying maid not on the 7th day the objective to buy a maid does not check off preventing upgrade to club ( I don't know if buy Saddie first contributed to the bug as well)
Issue 3 starting new game from clearing save carries over money (not a bad bug as restarts might be needed for future versions)
Issue 4 choosing the wrong choice on Fen's dialog and receiving a bad end says she leaves but is still in cafe next day
Issue 5 The cafe's name reverts back to default name during play.
Issue 6 The already posted sandbox glitching out if attempting to play that mode
All in all still a fun game to play.