Hi,

We have added a knowledge base article that could be helpful in the described scenario:

- https://docs.telerik.com/kendo-ui/knowledge-base/gantt-update-successor-when-parent-end-changes

Regards,
Neli
Progress Telerik

A further note from Peter:

Regarding the dependencies: there is actually even more to it. What I notice is that there are no assumptions on the part of the widget if a certain dependency is even possible in the real world.

I explain:

Task 1

Task 2

Task 2 is not a child of task 1 but it can only start when task 1 is finished

Right now the widget would allow you to create that relation even if the start date of task 2 is actually prior to the end date of task 1. 

I really think the product would be better off with this kind of validation that prevents users from doing things that are not possible in the real world.

This also prevents some of the less likely recursive dependencies that users could make. For example: if I create a start-start dependency between task 1 and task 2, I should not be able to also make a start-start dependency between task 2 and task 1

Having this validation will also make it far more easy to shift tasks

Regards,
Veselin Tsvetanov
Progress Telerik