It seems that whenever a task crosses the date where the daylight saving time switch appears everything on the gantt's week view gets shifted by 1 hour.
This stackblitz shows 2 Gantts. The first one has correct positioning, the second one appears to be bugged.
In this picture, you can see that in the 1st Gantt `Item 1` is slightly shifted to the right and covers Thursday and Friday. That's because its date is specified in UTC as `2025-04-03T00:00:00.000Z` which, for me in the UK, will result in `01:00:00.000`.
However, in the second Gantt `Item 1` now fully covers Thursday and doesn't extend to Friday even though the start and end dates are the same as in the first Gantt.
You might get slightly different positioning based on your time zone. The description is written based on the UK time zone.
It also affects drag-and-drop marquee. If you try to drag the right side of item 1, you'll see that it will show Saturday even before it starts covering Saturday.
Expected behaviour: Item 1 has to be positioned identically on both timelines
Hi Serhii,
Thank you very much for the screenshots provided.
I tried opening the StackBlitz demo that was attached to the thread, but it seems like there might be some issue with the demo link as it visualizes just a single Kendo UI for Angular Gantt component. For reference, here is how the StackBlitz demo loads on my side when forked:
Be that as it may, I tried reproducing the issue with the daylight time shift in the provided Gantt configuration. However, it seems like I am missing out on some of the reproduction steps since the tasks are correctly rendered on my side in accordance with the timezone of the machine:
Since I want to avoid misunderstandings and provide the maximum utility out of the support service, I would ask you to provide more detailed information about the specifics of the configuration of the second Gantt component or, ideally, the demo with the two Gantt components and some more detailed reproduction steps. This would allow me to replicate the discrepancy on my side, debug it, and thus come up with a more suitable suggestion.
I am looking forward to your reply.
Regards,
Georgi
Progress Telerik
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