The error is understandable from the video, so I'lI just add that the error has persisted for approximately 2 months.
p.s: The "Actions And Stuff" texture used in the video has nothing to do with the error.
MCPE-236047
When two subpacks from different texture packs are set, they are removed from the Activated list.
Resolved
Duplicate
1
We're tracking this issue at MCPE-230216, so I will resolve and link this report as a duplicate.
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