bug#53896: 28.0.91; Icomplete Vertical Mode fails to preview "C-x 8 RET 8072"

[Van Ly]

On Tue, 15 Feb 2022, Po Lu wrote:

> If I do this:
>
>  C-x 8 RET 8072 RET
>
> There is no "[No matches]" message,

C-x 8 RET 8072

pops up the "No matches" message before the final RET.  That speaks 
to me a RET won't help beyond.

--
vl