Changing endDate resets startDate of successors

[misto]

Steps to reproduce :
1/ Go to: https://www.bryntum.com/examples/gantt/localization/
2/ Increment "Finish" date of task "Run tests"

BeforeChangingEndDate.png (40.13 KiB) Viewed 631 times

AfterChangingEndDate.png (39.94 KiB) Viewed 631 times

[mats]

Reproduced, thanks for the report - we'll get this fixed!

https://github.com/bryntum/support/issues/173