Completion without sly-symbol-completion-mode display issue

[Uthar]

I'm using emacs 29.0.50 tip-of-trunk. When using SLY with the vanilla Emacs completion (i.e. with sly-symbol-completion-mode disabled), the suggestions are kind of merged with their metadata. See screenshot:

I think the issue is with this line (no space in the front):

sly/lib/sly-completion.el

Line 208 in 992e3f3

,(format "%s %5.2f%%"

To recreate:

1. emacs -Q
2. (setq sly-symbol-completion-mode nil)
3. (require 'sly)
4. (sly)
5. Try to complete a symbol