Strange.

I just tried the rhino head soup, which gives me a +45 carry weight bonus.
It properly stacks up with the +45 carry weight bonus of Elixir of Numbing.

But when I eat the Lasting Feast, which is said to give a +45 carry weight bonus, nothing happens.
I cannot see it in my stats. It only puts me in a state of “sated”. And worse, when I try to drink an Elixir of Numbing after eating the Lasting Feast, I don’t even see the Elixir’s bonus in my stats.

My stats free of food and elixir:

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My stats after eating the Lasting Feast and Elixir of Numbing:

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