I hope TS5 won't be released before TS4 is fixed.

TS3 still has bugs being left, I see no reason why they would do different for Sims 4, unless the developer fixed the bugs just a month or two after they were being introduced into the game then I can have that optimism, but no, Get to Work detective career is still broken as ever, dine out restaurant still don't care whether your sims ordered their food earlier than the rest of the patron, vampire bug from get famous only get fixed exactly a year later, and the lists go on.