Steps to reproduce: 1. Create a list parameter, which depends on another parameter (let say either 1 -> [A, B], 2 -> [C, D]) 2. Select value **1**, so that the parameter has list [A,B] 3. Select value A 4. Execute the script, and wait for finish 5. Change to value **2** Actual result: the list has [A, C, D] parameters Expected result: the list has [C, D] parameters only Demo: https://gph.is/g/Evp9OXV Reported by @autogun