"Iniciando a pasta inicial" no painel por cerca de 10 segundos no Ubuntu Mate 18.04 LTS

Se eu iniciar minha pasta pessoal, ela será aberta conforme o esperado, mas há essa mensagem "Iniciando a pasta pessoal" no painel por cerca de 10 segundos até que ela desapareça. Não encontrei nenhuma maneira de corrigir esse problema no Ubuntu Mate 18.04 LTS. Reinstalei o Caja e o Nautilus mas ambos não mudaram nada. Se eu iniciar o Caja diretamente, esse problema não aparece.

A execução cat ~/.config/mimeapps.listresulta na saída:

[Default Applications]
x-scheme-handler/discord-455712169795780630=discord-455712169795780630.desktop
text/x-tex=org.kde.kile.desktop
application/x-executable=ktelnetservice5.desktop
application/x-sharedlib=ktelnetservice5.desktop
text/x-haskell=geany.desktop
audio/mpeg=mpv.desktop
audio/x-mpegurl=mpv.desktop
audio/x-scpls=mpv.desktop
audio/x-vorbis+ogg=mpv.desktop
audio/x-wav=mpv.desktop
video/mp4=mpv.desktop
video/mpeg=mpv.desktop
video/mp2t=mpv.desktop
video/msvideo=mpv.desktop
video/quicktime=mpv.desktop
video/webm=mpv.desktop
video/x-avi=mpv.desktop
video/x-flv=mpv.desktop
video/x-matroska=mpv.desktop
video/x-mpeg=mpv.desktop
video/x-ogm+ogg=mpv.desktop
x-scheme-handler/http=firefox.desktop
x-scheme-handler/https=firefox.desktop
text/html=firefox.desktop
x-scheme-handler/about=firefox.desktop
x-scheme-handler/mailto=thunderbird.desktop
application/x-extension-eml=thunderbird.desktop
message/rfc822=thunderbird.desktop
inode/directory=caja-folder-handler.desktop
text/plain=pluma.desktop
image/bmp=eom.desktop
image/gif=eom.desktop
image/jpeg=eom.desktop
image/png=eom.desktop
image/tiff=eom.desktop
application/pdf=atril.desktop
application/vnd.oasis.opendocument.text=libreoffice-writer.desktop
application/msword=libreoffice-writer.desktop
application/vnd.openxmlformats-officedocument.wordprocessingml.document=libreoffice-writer.desktop
application/vnd.oasis.opendocument.spreadsheet=libreoffice-calc.desktop
application/vnd.ms-excel=libreoffice-calc.desktop
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet=libreoffice-calc.desktop

[Added Associations]
text/x-tex=org.kde.kile.desktop;
*/*=chromium-browser.desktop;
text/x-haskell=geany.desktop;
x-scheme-handler/http=firefox.desktop;
x-scheme-handler/https=firefox.desktop;
text/html=firefox.desktop;
x-scheme-handler/about=firefox.desktop;
x-scheme-handler/mailto=thunderbird.desktop;
application/x-extension-eml=thunderbird.desktop;
message/rfc822=thunderbird.desktop;
inode/directory=caja-folder-handler.desktop;
text/plain=pluma.desktop;
image/bmp=eom.desktop;
image/gif=eom.desktop;
image/jpeg=eom.desktop;
image/png=eom.desktop;
image/tiff=eom.desktop;
application/pdf=atril.desktop;
application/vnd.oasis.opendocument.text=libreoffice-writer.desktop;
application/msword=libreoffice-writer.desktop;
application/vnd.openxmlformats-officedocument.wordprocessingml.document=libreoffice-writer.desktop;
application/vnd.oasis.opendocument.spreadsheet=libreoffice-calc.desktop;
application/vnd.ms-excel=libreoffice-calc.desktop;
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet=libreoffice-calc.desktop;

[Removed Associations]
application/x-executable=ktelnetservice5.desktop;
application/x-sharedlib=ktelnetservice5.desktop;