bug#48153: 28.0.50; minor mode keymaps should not override keymap given to read-from-minibuffer

[Gregory Heytings]

> Sorry I missed a reproduction step. You have to turn on the minor mode 
> for the minibuffers. In my config there actually is a global minor mode 
> that turns the minor mode on even for the minibuffer.
>
> In Emacs 27, turning the minor mode on inside the minibuffer would not 
> override the key map given to read-from-minibuffer.
>
> I was able to reproduce this on a pristine init.el with just these 
> reproduction steps plus turning the minor mode on for all buffers with a 
> global minor mode.

Thanks for your clarification.  Could your perhaps mention what that minor 
mode is?  Otherwise it's rather difficult to reproduce and debug your 
problem.