Wrong information on copy/move window on zfs with deduplication on

[AdamK]

I've been copying and moving data inside single ZFS pool.
ZFS was configured with deduplication (fast dedup)

Information (Total, ETA, per file progress bar) were totaly wrong (Total alwas showed 0 / X (X was ok), ETA always showed 1s left, per file progres bar showed nothing)

$ LC_MESSAGES=C mc -F
mc --configure-options
Home directory: /mnt/cs01/home_adamk
Profile root directory: /mnt/cs01/home_adamk

[System data]
    Config directory: /etc/mc/
    Data directory:   /usr/share/mc/
    File extension handlers: /usr/lib/mc/ext.d/
    VFS plugins and scripts: /usr/lib/mc/
        extfs.d:        /usr/lib/mc/extfs.d/
        fish:           /usr/lib/mc/fish/

[User data]
    Config directory: /mnt/cs01/home_adamk/.config/mc/
    Data directory:   /mnt/cs01/home_adamk/.local/share/mc/
        skins:          /mnt/cs01/home_adamk/.local/share/mc/skins/
        extfs.d:        /mnt/cs01/home_adamk/.local/share/mc/extfs.d/
        fish:           /mnt/cs01/home_adamk/.local/share/mc/fish/
        mcedit macros:  /mnt/cs01/home_adamk/.local/share/mc/mc.macros
        mcedit external macros: /mnt/cs01/home_adamk/.local/share/mc/mcedit/macros.d/macro.*
    Cache directory:  /mnt/cs01/home_adamk/.cache/mc/
 '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-option-checking' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--runstatedir=/run' '--disable-maintainer-mode' '--disable-dependency-tracking' 'AWK=awk' 'X11_WWW=x-www-browser' '--libexecdir=/usr/lib' '--with-x' '--with-screen=slang' '--disable-rpath' '--disable-static' '--disable-silent-rules' '--enable-aspell' '--enable-vfs-sftp' '--enable-vfs-undelfs' '--enable-tests' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -ffile-prefix-map=/build/mc-3Uz4Lz/mc-4.8.29=. -fstack-protector-strong -Wformat -Werror=format-security' 'LDFLAGS=-Wl,-z,relro -Wl,-z,now -Wl,--as-needed' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2'