Now, below the deck name, it will have the new custom tag, and will say e.g. "hero - tournament". The "tournament" tag will also appear under the "With Selection" dropdown to enable sorting (which works just fine). All good so far.
Now select "Edit" of the deck with the "tournament" tag on it
Make a change to the deck (cards or notes), and select "Save"
How to reproduce:
Now, below the deck name, it will have the new custom tag, and will say e.g. "hero - tournament". The "tournament" tag will also appear under the "With Selection" dropdown to enable sorting (which works just fine). All good so far.