xfdesktop -reload
DBG[xfdesktop-common.c:292] xfdesktop_debug_set(): debugging enabled
DBG[xfdesktop-application.c:582] cb_wait_for_window_manager_destroyed(): found window manager after 1 tries
DBG[xfce-desktop.c:1789] xfce_desktop_set_single_workspace_mode(): single_workspace_mode now TRUE
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfdesktop-file-icon-manager.c:2256] xfdesktop_file_icon_manager_add_icon(): attempting to set icon 'Корзина' to position (2,0) [location in cache]
DBG[xfdesktop-thumbnailer.c:310] xfdesktop_thumbnailer_queue_thumbnail(): file: / not supported
DBG[xfdesktop-file-icon-manager.c:2256] xfdesktop_file_icon_manager_add_icon(): attempting to set icon 'Файловая система' to position (1,0) [location in cache]
DBG[xfdesktop-thumbnailer.c:310] xfdesktop_thumbnailer_queue_thumbnail(): file: /home/rodion not supported
DBG[xfdesktop-file-icon-manager.c:2256] xfdesktop_file_icon_manager_add_icon(): attempting to set icon 'Домашний каталог' to position (0,0) [location in cache]
DBG[xfdesktop-icon-view.c:2685] xfdesktop_setup_grids(): CELL_SIZE=72,800, TEXT_WIDTH=60,800, ICON_SIZE=32
DBG[xfdesktop-icon-view.c:2686] xfdesktop_setup_grids(): grid size is 13x25
DBG[xfdesktop-icon-view.c:2699] xfdesktop_setup_grids(): created grid_layout with 325 positions
(xfdesktop:20246): libxfce4ui-WARNING **: 14:07:00.496: ICE I/O Error
(xfdesktop:20246): libxfce4ui-WARNING **: 14:07:00.497: Disconnected from session manager.
DBG[xfce-workspace.c:329] xfce_workspace_monitors_changed(): Adding workspace 0 backdrop 0
DBG[xfce-workspace.c:633] xfce_workspace_connect_backdrop_settings(): prefix string: /backdrop/screen0/monitorVGA-1/workspace0/
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:752] workspace_changed_cb(): current_workspace 0, new_workspace 0
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:534] backdrop_changed_cb(): monitor x 0, y 0, width 1920, height 1080
DBG[xfce-backdrop.c:1667] xfce_backdrop_generate_async(): loading image /usr/share/xfce4/backdrops/sarah_muenz__winter_wonderland__4k.jpg
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:1539] xfce_desktop_get_current_workspace(): workspace_num 0, single_workspace_num 0, current_workspace 0, max workspaces 1
DBG[xfce-desktop.c:534] backdrop_changed_cb(): monitor x 0, y 0, width 1920, height 1080
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
DBG[xfdesktop-icon-view.c:1923] xfdesktop_icon_view_style_updated(): cell spacing is 2
DBG[xfdesktop-icon-view.c:1924] xfdesktop_icon_view_style_updated(): cell padding is 6
DBG[xfdesktop-icon-view.c:1925] xfdesktop_icon_view_style_updated(): cell text width proportion is 1,900000
DBG[xfdesktop-icon-view.c:1926] xfdesktop_icon_view_style_updated(): ellipsize icon label is true
DBG[xfdesktop-icon-view.c:1927] xfdesktop_icon_view_style_updated(): tooltip size is -1
DBG[xfdesktop-icon-view.c:1928] xfdesktop_icon_view_style_updated(): label radius is 4,000000
DBG[xfce-desktop.c:210] xfce_desktop_ensure_system_font_size(): dividing by PANGO_SCALE
DBG[xfce-desktop.c:213] xfce_desktop_ensure_system_font_size(): system font size is 9,00000
--------------------------
What else info needed? I'm a new user and it just happened. I googled in russian internet, that problem exists permanently, from release to release.
Xubuntu 19.04 is EOL. Marking this ticket as closed. If you are able to reproduce in a recent supported release (focal, impish, jammy), please reopen this ticket or create a new one. Thanks!