[Please Note:] Players should no longer recieve Tarps as refunds, nor is the Tarp available to be added to islands via the cartographer. However, Tarps already generated in previous saves and collected by will remain.
The update to version 2009 conbined Tarps and Cloth into the one item. However, in older pre-existing saves the Tarp objects were not updated. As well as this, Tarp textures are no longer present in the game and Tarps may show up as dark or black smooth objects
There are no workarounds for this issue. Please also note that breaking apart items that were created with Tarps before the update may also refund tarps instead of the new material.