Using replay badges on feats only allows you to do one at a time. it then freezes and becomes non responsive. You have to exit the feats menu and re-navigate to the next feat you want to use replay badges on
There is a workaround, in the meantime: - Either move the left stick (controller) or up/down arrow keys (PC) to regain focus on the Feat list.
Confirmed for the PS4: if you try to use the d-pad to cycle through feats it doesn't work. The L3 Joystick on the PS4 does work and allows you to unlock feats one after another. Perhaps it is just a glitch; you can still choose to use either the D-pad or L3 stick to navigate through the broker.
Potentially related: there is a lag on unlock. The "needed FP to next SP" bar doesn't move until you leave and re-enter the menu. More potentially related: if you use the DPad to move around the Shared Bank and Character Bank (such as when checking collections and generally moving stuff around) there comes a point where it freezes if you move too fast, such as if you're checking a large amount of seasonal collection pieces. I think the second started when they fixed the broker problem. If so, I'll take this over that problem.