Watchtower roof is not recognised in game as part of the watch tower (name of item does not pop up on screen when looking at it or the horizontal support beam for the roof) and no option to dismantle the watchtower roof (attempted with all tools)

The watch tower cannot be dismantled once the roof is built on watchtower.
Can you please fix this bug so when we look at the watch tower with the required tool it gives us the option to dismantle the roof so we can then dismantle the remaining parts of the watchtower also. Thank you. Happy 10 years!