RSRP-469340: Deconstruction: Undo of CA "Merge deconstructed declaration" produces uncompilable code if name of variable was not confirmed by Enter.

JetBrains ReSharper Ultimate 2018.1 12.0.20180418.033450-eap10d.

            var (name, phone) = person;
            Console.WriteLine(name, phone);
            Console.WriteLine(name, phone);

1. Invoke "Merge deconstructed declaration" CA on ( in var (name, phone) = person;
2. (Do not click Enter to confirm the variable name) Undo by Ctrl+Z.

Actual result:
Uncompilable code:

            var (name, phone) = person;
            Console.WriteLine((name, phone)ame, (name, phone)hone);
            Console.WriteLine((name, phone)ame, (name, phone)hone);

Expected result:
Previous version of code.