How to filter tasks by hashtag or mention?
You can use the "Review" view to filter tasks using a specific hashtag or mention.
First, open Review in the sidebar, then select one of the available filters (or create a new one) and click on "Edit". Multiple filter options will open. You can type in a hashtag, mention, or generally any text you want to filter by into the "Keyword" field. Click on "Apply" to save it.
Next time you open the same filter, it will remember the keyword you entered here. Consider creating a new filter for this specific search. The saved filter will be also synced across all your devices.