Alternate solution to add hashtags

This does not work with Gutenberg according to https://github.com/Automattic/jetpack/issues/11869
I still use the classic editor.

1. Download a code snippet plugin.
2. Add and activate the following snippet:

// **Set prefix**
// function set_new_publicize_default_prefix($msg) {
// return ‘prefix’;
// }
// add_filter(‘wpas_default_prefix’, ‘set_new_publicize_default_prefix’);

// **Return the title**
function set_new_publicize_default_msg($msg) {
return $msg;
}
add_filter(‘wpas_default_message’, ‘set_new_publicize_default_msg’);

// **Set suffix (ie. hashtag)**
function set_new_publicize_default_suffix($msg) {
return ‘ #hashtag’;
}
add_filter(‘wpas_default_suffix’, ‘set_new_publicize_default_suffix’);

Tested with Twitter, Facebook, and LinkedIn.