The background lighting in the UI is too dark for Hoppers, it's minecart variant, Loom, Stonecutter, general inventory/crafting compared to every other block UI such as the smithing table (pics included)
MCPE-171314
Background lighting in some block UIs is too dark
Resolved
Fixed
6
(Unassigned)
724350
Confirmed
Multiple
1.20.20.20 Preview, 1.20.10.24 Preview, 1.20.0, 1.20.1 Hotfix, 1.20.50.23 Preview, 1.20.60.20 Preview, 1.20.60.21 Preview, 1.20.60.22 Preview, 1.20.50, 1.20.60.23 Preview
Retrieved
Thank God I am not the only one who noticed this!