Not working in Command mode

Peekaboo window is not displayed when I enter Command mode and want to paste the contents of one of the registers

Let's say I have name of the file in the register `"1` and I execute `:edit 1`. Upon pressing `` and before hitting `1` a peekaboo window should be displayed but it isn't

I am using Neovim 0.4.3 if that makes a difference

Reproduce the issue in Neovim 0.4.3 by entering Command mode and using :edit 1 with a populated register. Trace the Command-mode register-paste handling and compare it with the working insert-mode behavior; done means the peekaboo window appears after and before the register number is entered.

Written by the indexing model from the issue text.