Task becoming milestone

[kifer]

We are using Odoo 15 community.
When I create a task, I resize it by draging a side of the task. After I stop dragging the task becomes a milestone
I checked in the create route of the module with a python debugger. In the data sent, startDate and endDate are the same, and the task created has those dates too.
Since it happens before entering the web controller, is it a javascript issue? Or is there a param to set in the gantt configuration object?

[Terence]

Which module version are you using? Is it reproducible here https://odoo-gantt.bryntum.com/

demo/demo

[kifer]

We're using 2.0.4 version
This works fine on https://odoo-gantt.bryntum.com/ and on our project with a clean database
But for some reason, it doesn't work on a client database. Even if we create a new project. That's why I was asking if it might be a javascript issue or what might cause it. It works fine with our code but not if we have data in our database

[Terence]

If it happens on drag and the dates sent are the same, then it is a javascript issue. But I can not reproduce it. Have you cleared cache?
Version 2.0.5. Also please try to update.