Currently no notifications are being sent if Isotope is used together with the latest Contao 4.5 version. The bug is already fixed and will be shipped with Contao 4.5.5. See commit: Correctly track modified fields in the `Model` class.
Besides the announcement of the bugfix release, we want to give you an overview about the new features that will be shipped with Isotope eCommerce 2.5.
More information to this release
The most important bugfix of this release concerns orders always being considered as being paid. Thus, updating to 2.4.1 is strongly recommended! Other than that we fixed numerous minor flaws when using Isotope together with Contao 4 and - once again thanks to our Circle members - improved the stability of the FineUploader attribute.