Inconsistency in using net name as a voltage source PUBLIC

https://www.circuitlab.com/circuit/a5bzf7/good-netname-and-a-free-voltage-source/ shows that a net label can be used to generate an implicit voltage source. This use of the net label appears to work if the net label is of the form "+1V" or "+1". However this example shows that using a mixture of these two forms does not work.

https://www.circuitlab.com/circuit/a5bzf7/good-netname-and-a-free-voltage-source/ shows that a net label can be used to generate an implicit voltage source.

This use of the net label appears to work if the net label is of the form "+1V" or "+1".

However this example shows that using a mixture of these two forms does not work.