how can you say its not a complete blocker? just because of this bug i was about to lose my client and project both. i had to switch to offline Rendering engine despite of the project was finished in ue4. i guess this is the problem with real time render engine you cant rely on 100% if you are working on professional quality project or lose your client.
see the post below which i had posted some times ago. i had run into this problem but coudn’t get solution.