Bug: Gantt view: moving task changes duration #1996

New Issue

Yodbha · 2022-11-12T15:50:57Z

Yodbha commented

2022-11-12 15:50:57 +00:00

Version information:

Frontend Version: try 2022-11-12
API Version: try 2022-11-12
Browser and OS Version: Firefox, MacOS

Steps to reproduce:

Add start and end dates (/times) to a task.
View in Gantt view.
Move task horizontally (changing days).
...

Expected behavior:

Task duration should stay the same. Only the days should change.

Actual behavior:

Task duration increases.
Moving the task several times back and forth keeps increasing its duration.
My impression is that it's happening at the transition from one week to another.

**Version information:** Frontend Version: try 2022-11-12 API Version: try 2022-11-12 Browser and OS Version: Firefox, MacOS **Steps to reproduce:** 1. Add start and end dates (/times) to a task. 2. View in Gantt view. 3. Move task horizontally (changing days). ... **Expected behavior:** Task duration should stay the same. Only the days should change. **Actual behavior:** Task duration increases. Moving the task several times back and forth keeps increasing its duration. My impression is that it's happening at the transition from one week to another.

konrad commented

2022-11-12 16:07:13 +00:00

Can you provide exact steps to reproduce?

Yodbha commented

2022-11-12 19:24:23 +00:00

The funny thing is - it's not exactly reproducable.
Sometimes the task gets shorter, sometime longer. The exact date transition where it occurs is also not the same...
But try this (also works on my Ubuntu machine with Chrome browser):

Open list in Gantt view
Create a task
Shorten the task to 2 or 3 days duration
Click task and keep holding
Move left or right. It works when going slow, but especially when going a little faster. The task becomes longer or shorter at seemingly random dates (eventually having 0 duration in that case)

Maybe internally the frontend gets the signal that I'm dragging one of the ends? It also happens if I click, hold, move my cursor away vertically, and then go horizontally (so that I don't accidentally touch the ends of a task).

The funny thing is - it's not exactly reproducable. Sometimes the task gets shorter, sometime longer. The exact date transition where it occurs is also not the same... But try this (also works on my Ubuntu machine with Chrome browser): 1. Open list in Gantt view 2. Create a task 3. Shorten the task to 2 or 3 days duration 4. Click task and keep holding 5. Move left or right. It works when going slow, but especially when going a little faster. The task becomes longer or shorter at seemingly random dates (eventually having 0 duration in that case) Maybe internally the frontend gets the signal that I'm dragging one of the ends? It also happens if I click, hold, move my cursor away vertically, and then go horizontally (so that I don't accidentally touch the ends of a task).

konrad added the

kind/bug

label 2022-11-12 20:33:08 +00:00

konrad commented

2022-11-12 20:45:03 +00:00

I was able to reproduce this, but as you said not reliably. I suspect a race condition.

Another thing I noticed is the end time of the task is 23:59 but on the gantt chart it shows up as 00:00. Maybe that's related to that.

I was able to reproduce this, but as you said not reliably. I suspect a race condition. Another thing I noticed is the end time of the task is 23:59 but on the gantt chart it shows up as 00:00. Maybe that's related to that.

👍 1

Yodbha referenced this issue from vikunja/frontend

2022-11-19 15:25:08 +00:00

Feature request: Gantt view: Width should scale with hours, not days #1997

konrad commented

2023-05-31 13:11:30 +00:00

I was not able to reproduce this anymore. Can you check if it's gone for good?