Feudal Age needs to be researched games

Game Version: 101.101.36906.04941835
Platform : Steam
Opersating System: Windows 10.
Gamertag: {Pleb}_Nanashi

Issue:

This has happened two out of three multiplayer team games for a flank player, where the player was forced to research feudal age twice. They researched feudal and then were required to research it again.

Reproducing Issue :

Not certain. In both instances the bug happened to the flank player in a rated games. This was with a qued team and not random team.