Hi Gianluca,
Thanks for contacting Syncfusion support.
We have checked your reported issue “After upgrading package Gantt doesn’t work properly with Custom Adaptor” in latest package version 19.3.0.43 but unfortunately we could not noticed any issues with Gantt. Also, we have prepared a sample for your reference which can be get by the following link.
Kindly share the below detail which may helpful to look into this issue
- Share the issue replicating scenario
- Share your code sample,
- Share issue depicting image/video
- Replicate your issue in shared sample, if possible
Regards
Alagumeena.K