In a laptop Thinkpad t14s AMD 4750 PRO (Renoir GPU) with Ubuntu 21.04 (5.11.0-22-generic)
When opening ANY LibreOffice app as a Snap, from GUI menu or from command line, 2 processes are opened, and the program GUI is not displayed.
eduardo@edu-ThinkPad-T14s:~$ pgrep -a soffice
10612 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --writer
10613 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --writer
eduardo@edu-ThinkPad-T14s:~$ pgrep -a soffice
10803 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --impress
10804 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --impress
eduardo@edu-ThinkPad-T14s:~$ pgrep -a soffice
11002 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --calc
11003 /snap/libreoffice/223/lib/libreoffice/program/soffice.bin --calc
Killing the last process of any LibreOffice app allows the program GUI to start fully and be displayed.
LibreOffice Snap version:
Name........Version.Rev.Tracking Publisher
thunderbird 78.11.0 12 latest/stable canonical✓
Here are the jurnalctl -t audit -f logs
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
jul 13 22:14:31 edu-ThinkPad-T14s audit[11213]: SECCOMP auid=1000 uid=1000 gid=1000 ses=3 subj=snap.libreoffice.writer pid=11213 comm="soffice.bin" exe="/snap/libreoffice/223/lib/libreoffice/program/soffice.bin" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7fa1753ecc7f code=0x50000
After killing the last process the GUI its fully loaded and thunderbird snap work.
Here are the jurnalctl -t audit -f logs after killing the last process
jul 13 22:15:23 edu-ThinkPad-T14s audit[1059]: USER_AVC pid=1059 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/" interface="org.freedesktop.DBus.Peer" member="Ping" mask="send" name="org.freedesktop.Avahi" pid=11212 label="snap.libreoffice.writer" peer_pid=1051 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=103 hostname=? addr=? terminal=?'
This is a related Answer form Launchpad
https://answers.launchpad.net/snappy/+question/697307
Maybe its something with new amdgpu drivers, since in another laptop (thinkpad t460 intel with Ubuntu 21.04) this does not happen.
Status changed to 'Confirmed' because the bug affects multiple users.