ToolButton QML Type and GtkButton do not work in header/toolbar
When adding a ToolButton QML Type or GtkButton's to an ApplicationWindow header, the buttons do not function under plasma mobile. This prevents users from being able to enter context menus or drawers within developed applications. The below applications are examples (One Qt and one Gtk) of apps with menu buttons that don't work under plasma mobile (They both work in other shells).
Qt Example: https://gitlab.com/The3DmaN/media-server-connect/
Python Gtk Example: https://gitlab.com/The3DmaN/abv-calc