Erpnext: Moving Tasks using the Gantt Chart doesn't function correctly

[bitaccesscomau]

When moving tasks using the Gantt view the task will have its' date set to 1 month ago and task duration to set to 1 day. If the task has tasks dependant on it it will also recursively reset the linked tasks. This is both in the Gantt view and visible on the the task properties itself.

Please see order of actions below with screenshots. (Movement was performed from current day to next calendar day by dragging the centre of the task).

1. Initial task layout.
   
2. Movement of task 2 (Initial Scoping Session)
   
3. Refresh
   
4. Movement of Task 1 (Create Work order) + Refresh
   
5. Movement of Task 1 again to test date movement
   
6. Final view.
   

If you require further testing or feedback please let me know.

[bitaccesscomau]

This references #17923 with more information.

[clarkejj]

Thanks for reporting this - please post your observations on discuss too for all to benefit and respond to help debug this.

To relate both conversations be sure to add cross links here and there too.

[bitaccesscomau]

Some additional research has lead me to this pull request: https://github.com/frappe/gantt/issues/128
(More information and issue reference here: https://github.com/frappe/gantt/pull/126)

Seems like it is an issue with mouse events?

I'll try a merge from that link on my instance and report back my findings.

[clarkejj]

Good info - I urge you to post a link to this on discuss.ernext.com to inform and engage the community!

[bitaccesscomau]

Thanks for your feedback, I have opened this discussion here to gather more input:

https://discuss.erpnext.com/t/moving-tasks-using-the-gantt-chart-doesnt-function-correctly/54205

[valentincauro]

Excatly the same issue, really problematic !

[wojosc]

I have noticed that there are big differences in the manipulation of tasks in gantt view depending on the browser I use. In Chrome is works to a certain extent: You can move a task and change the length. After that manipulation fails at some point.

In Firefox the task will just jump to some random spot and then be unusable in gantt view.

[Achder]

Any updates on this?

[dvdl16]

There is an open PR for this, but it hasn't been merged yet