Relevant logs when opening the "tools" menu:


(soffice:22160): Gtk-WARNING **: Error loading image 'file:///usr/share/themes/Ambiance/gtk-3.0/assets/button-hover.png': Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading image 'file:///usr/share/themes/Ambiance/gtk-3.0/assets/check-menuitem.png': Unrecognized image file format

(soffice:22160): Gtk-WARNING **: drawing failure for widget 'GtkModelMenuItem': invalid matrix (not invertible)

(soffice:22160): Gtk-WARNING **: drawing failure for widget 'GtkMenu': invalid matrix (not invertible)

(soffice:22160): Gtk-WARNING **: drawing failure for widget 'GtkWindow': invalid matrix (not invertible)

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(soffice:22160): GLib-GObject-CRITICAL **: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

(soffice:22160): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed