10 years on, Marvel fans are still confused over the Doctor Strange post-credits scene: "Did Marvel forget about that?"

One whole decade after the movie hit screens, Marvel fans are realizing that the Doctor Strange post-credits scene has never been resolved, and are wondering if the MCU will ever give us any answers.
Variety

Every Marvel Studios Post-Credits Scene, Ranked From Worst to Best

SPOILER ALERT: This story discusses every post-credits scene in the Marvel Cinematic Universe, through 2022’s “Doctor Strange in the Multiverse of Madness.” In other words: It’s all spoilers! Ever ...
Comic Book Movie

WANDAVISION Head Writer Details Scrapped Post-Credits Scene With Doctor Strange; Talks SCARLET WITCH's Future

In WandaVision's post-credits scene, we found the Scarlet Witch hiding out in a remote cabin where she was studying the Darkhold. Doctor Strange in the Multiverse of Madness controversially revealed ...