I use sshfs to mount my home directory. This works fine since many years,
including the version 3.7.3 of sshfs.

After installing version 3.7.4 from
https://download.opensuse.org/repositories/filesystems/15.5, simple file
accesses still work, but when I try to login graphically, the login hangs
because many processes hang with status "D":

#ps -efl
F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
...
0 D myuser    9334  9218  0  80   0 - 62739 filena 13:53 ?        00:00:00
/usr/lib/xdg-permission-store
0 D myuser    9377  9218  0  80   0 - 158487 d_allo 13:53 ?       00:00:00
/usr/bin/ksmserver
0 D myuser    9379  9218  0  80   0 - 314812 d_allo 13:53 ?       00:00:00
/usr/bin/kded5
0 D myuser    9407  9218  0  80   0 - 186461 d_allo 13:53 ?       00:00:00
/usr/bin/plasmashell --no-respawn
0 D myuser    9506  9218  0  80   0 - 199330 d_allo 13:53 ?       00:00:00
/usr/lib/evolution-data-server/evolution-data-server/evolution-alarm-notify
0 D myuser    9515  9511  0  80   0 - 37989 d_allo 13:53 ?        00:00:00
oyranos-monitor -s --daemon
0 D myuser    9529  9218  0  80   0 - 156587 d_allo 13:53 ?       00:00:00
/usr/bin/kaccess
0 D myuser    9566  9377  0  80   0 - 161680 d_allo 13:53 ?       00:00:00
/usr/bin/kwin_x11 -session
1094a77331000144844708300000033840001_1448447132_823255
0 D myuser    9732  9218  0  80   0 - 11101 walk_c 13:58 ?        00:00:00
systemd-tmpfiles --user --clean

The sshfs process does not die but file access to the sshfs filesystem is then
no longer possible.
I suppose the high access load causes the problem.