Boats made out of Ashen, Azalea and Trumpet planks are not tagged properly.
These include the following item tags:

• minecraft:boats;
• minecraft:chest_boats;

This can be a small annoyance (for example, when grouping items with REI). It also means they cannot be used as furnace fuel.

Thank you very much for addressing this with a fix. However, the fix omits both the Azalea Boat (quark:azalea_boat) and Azalea Boat with Chest (quark:azalea_chest_boat). If this is intentional, I am not sure of the reasoning behind it.

fixed