Non-whitelisted wood blocks just flat out don't mine, if the wood is not in the config file the block should just mine normally without dropping the entire tree regardless of your shift option.

This issue is made even worse by the fact that Treechopper is not honoring the config file. For example I used the option to show the item name, and even after adding that to the config file and reloading the server, these woods will not mine. For example Darklands Oak (tile.dltlog) will not mine even though it's added to the config, Other players on the server have told me that they could get Darklands Oak to drop the entire tree, but not constantly and when it does it seems to lag for them (where the block disappears and reappears then the tree drops) whether the entire tree drops or not, they have Treechopper installed client-side.