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Gantt column editor strange behaviour

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DropDownList Gantt
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Vedad
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Vedad asked on 08 Apr 2021, 04:49 PM

Hi,

I have added Kendo dropDownList as cell editor to Kendo Gantt. 

After some time, some users reported issue where doubleclick on cell randomly just opens and closes dropdown on its own. 

We did quite a lot of debugging until we were able to reproduce issue. 

It turns out that in some cases (not clear under which conditions) when doubleclick is either too fast or performed on laptop touchpad, it happens almost in 30% of cases.

(We are using kendo UI 2020 R2 version, but issue is reproducible even in latest version).

Issue was reproduced by developer on Dell Latitude 5580 (using touchpad doubleclick), while users reported on other systems.

Here you can find the dojo where issue is reproducible.

https://dojo.telerik.com/aHuDaYup/4

Also, we recorded video on the same dojo, where behavior is demonstrated. 

First 4 clicks are mouse, and next ones are with touchpad. (users were having issues even with mouse)

If there are any things we can do to help, please let me know.

Thank you and best regards.

Vedad

 

 

 

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Nencho
Telerik team
answered on 13 Apr 2021, 01:52 PM

Hello, Vedad,

Thank you for the detailed information, video, and example. 

We are currently trying to replicate the issue, in order to pin down the reason for it. We would need to find a similar device or alternative, and this is why we would need a bit more time. I will update you in this thread immediately after we have some further information on the matter, or if we require such.

Thank you in advance for your patience!

Regards,
Nencho
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Vedad
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answered on 14 Apr 2021, 09:53 AM

Hi Nencho,

thank you for reply. If it helps, I reproduced it on macbook pro 2020, by simply setting my trackpad's click to light and then do double-tap.

If there is anything else, please let me know.

Best regards,

Vedad

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Nencho
Telerik team
answered on 19 Apr 2021, 09:17 AM

Hello, Vedad,

Thank you for the additional clarification. We will enlarge the specter of testing, in order to achieve a consistent replication of the issue in an attempt to pin down the reason for it. Once done, I will update you with follow-up information in this thread.

Thank you for your patience.

Regards,
Nencho
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Aleksandar
Telerik team
answered on 10 May 2021, 06:23 AM

Hello Vedad,

Thank you for your patience. I can confirm we were able to observe the behavior and it is indeed a bug. I have therefore went ahead and logged it in on your behalf. You can monitor the status of the issue via this GitHub item:

https://github.com/telerik/kendo-ui-core/issues/6409

Currently I cannot suggest a possible workaround, so you can subscribe to the issue linked above and update the version of Kendo UI used once the issue is fixed.

Regards,
Aleksandar
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