I just want to add that I can confirm the same pitch bend bug. I have found it to happen with every plugin in the arturia collection, when using logic x, mojave os.
On the other hand, this bug does not occur with any waves keyboard plugin or logic’s built in plugins, among others. It is strictly a problem with Arturia not capturing all of the values, particularly when pitch quickly returns to 0. When manipulated at slower rates, or with an extra little wiggle so that the plugin can capture the correct value, you can “workaround” the issue, but it is not a great situation.