netrw, clipboard=unnamedplus and wl-copy cause high CPU load when netrw banner is turned off

[saccarosium]

Problem

I noticed that when i turn off the banner in netrw (via config or via I) my cursor starts to flicker and the CPU load goes up noticeably. While debugging I found out that when this happens, there's also a rapid deletion and creation of /tmp/wl-copy-buffer-xxxx directories happening at the same time.

Curiously, this only happens when the netrw banner is turned off.

Steps to reproduce

cd /tmp
nvim --clean

:set clipboard=unnamedplus
:Explore
<I>   # press 'I' to disable the banner in netrw

Observe how the curser starts to flicker and the CPU usage goes up considerably. When in /tmp, you should see a directory called wl-copy-buffer-xxxx being rapidly created and deleted with a new suffix -- probably causing this issue.

Expected behavior

CPU load should not increase when the banner is turned off, and the cursor should not flicker as well.

Neovim version (nvim -v)

v0.7.2, confirmed also with latest nighly

Vim (not Nvim) behaves the same?

yes, 9.0

Operating system/version

Debian

Terminal name/version

gnome-terminal

$TERM environment variable

xterm-256color

Installation

apt

original issue: neovim/neovim#23650