This is a known bug which has been resolved in MATLAB R2018b.
If you are experiencing this issue in MATLAB R2018a or an earlier release, you can use one of the following workarounds:
1. The recommended workaround is to create a custom function to copy 'uitreenodes' as shown below:
function nodeCopy = treeNodeCopyObj(node, parent)
nodeProperties = get(node);
nodeProperties = rmfield(nodeProperties, 'BeingDeleted');
nodeProperties = rmfield(nodeProperties, 'Type');
nodeCopy = uitreenode(parent, nodeProperties);
end
2. Another potential workaround, which is less recommended, is to create a custom 'copyobj' function and put it in your path above the built-in version as shown below:
function nodeCopy = copyobj(node, parent)
if isa(node, 'matlab.ui.container.TreeNode')
nodeProperties = get(node);
nodeProperties = rmfield(nodeProperties, 'BeingDeleted');
nodeProperties = rmfield(nodeProperties, 'Type');
nodeCopy = uitreenode(parent, nodeProperties);
else
builtin('copyobj', node, parent)
end
