can't delete item from reordable list

[boris-741]

if there are more than 10 elements in the reordable lis, then when I delete from it I get an error due to incorrect sorting
instancePorts = node.InstancePorts.Where(x => isMatchingInstancePort(x.fieldName)).OrderBy(x => x.fieldName).ToList();
before sort we got
item 1
item 2
....
item 10

and after sort
item 1
item 10
item2
...
item9

maybe there will be enough
instancePorts = node.InstancePorts.Where(x => isMatchingInstancePort(x.fieldName)).ToList();