It is not yet clear whether the matter is in volume or in the relatively new USB 3.1. I decided not to take 64 GB flash drives for now, because two USB 2.0 32 GB flash drives from this manufacturer still work fine.
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
65 Review
Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
🔜 Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review