RT-AC68U_3.0.0.4_376.49_4 lost MAC Name

Happy New Year!

Steps to reproduce the problem:
1. Open the Mac Address filter. See the current list of MAC Addresses.
2. Copy one existing MAC Addresses to Clipboard. Remove this address from the list.
3. Paste this MAC Addresses as a new, add his name to the MAC Name and add to the MAC list.

After that I see MAC Address in the MAC Name field, exception of the last string of the MAC list.