I installed Salix on BTRFS. this is the information you asked for, I also add the list of subvolumes:

- mount:
/dev/sda5 on / type btrfs (rw,noatime,subvol=/@,compress=zstd,discard=async)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda5 on ...

When i try to remove (or update) any installed package i have one error like this:

Removing package tinyterm-0.6.0-x86_64-1salix15.0...

(gslapt:10173): Gtk-CRITICAL **: 10:44:16.699: gtk_window_set_default_size: assertion 'GTK_IS_WINDOW (window)' failed

(gslapt:10173): Gtk-CRITICAL **: 10:44:16 ...