This latest reset (Apr 9) I came back to the game for the first time in 6 months, and this week has been my first week doing Black Armory content. I unlocked all the Forges, and decided to farm God roll Blast furnace. Along the way, Ada stopped offering all frames but 2, bow and pulse frames. I got my god roll pulse, but now I'm stuck only able to farm Pulse and Bow frames when I want to farm Kindled Orchid Hand Cannon rolls. I've seen countless reports online dating back to December saying that this is a glitch if you carry over a frame from the previous week, but this is MY FIRST WEEK ever doing Black Armory Content, and thus no frames were carried over. Can someone explain whether this is actually a glitch or intended and why it happens?
Not a glitch. You can do two different frames per week. After you do a frame, you have the option of doing a non-powerful version. Once you've done two different powerful frames, you can only do the non-powerful versions of those frames, so all the other ones will disappear. You can choose different frames tomorrow, after weekly reset happens.