Created attachment 6493
xfce4-panel-applicationsmenu-show_button_title.patch
In my opinion, the bug is just a forgotten initialization of plugin->show_button_title variable. After adding the initialization in (see the one-line patch), the "Show button title" checkbox is checked upon adding the "Applications Menu" to the panel, and the title is shown as well.
Created attachment 6493 applicationsmen u-show_ button_ title.patch
xfce4-panel-
In my opinion, the bug is just a forgotten initialization of plugin- >show_button_ title variable. After adding the initialization in (see the one-line patch), the "Show button title" checkbox is checked upon adding the "Applications Menu" to the panel, and the title is shown as well.