The comment tag filter is not working when publishing a Chatter comment.

 Problem

When using Comment Tag Filters, a Chatter comment placed in Salesforce is only synced to Jira when a SPACE follows the hashtag. It does not work when followed by either a TAB or an ENTER.

 Solution

This is an expected behavior since, within chatter, we can create or select topics using the # symbol. More information about Salesforce topics can be found in the https://help.salesforce.com/s/articleView?id=sf.collab_add_topic.htm&type=5 documentation.

To prevent Salesforce from converting a filter into a topic, press the SPACE or ESC key on your keyboard; if you press the ENTER or TAB key, Salesforce will convert the filter to a topic, changing the format and making it unreadable for the comment filter.