Questions Tagged bug

Answered: Hi Andy, By default, the Scheduler expands parents nodes automatically when you drag an event over them. You can disable this behavior using the treeAutoExpand property (set the value to false ).

Answered: I am using the default theme, I am just changing colours on the before render events. I have turned floating events off and it works fine for what I need.

Answered: Hi Leo, This logic hasn’t changed recently. In the demo, it seems to work fine. There are two things to check: Setting the value to 0 disables hiding. If you want to use the shortest delay possible, ...

Answered: Hi Leo, This issue should be fixed now in the latest sandbox build (2025.4.6672). It was relatively harmless - it had no effect on the UI in most cases. You could reproduce it using Ctrl + click on a...

Answered: Unfortunately, I’m not able to reproduce the issue with Next.js 14 and 15. With 'use client'; , you should be able to import DayPilotScheduler in a standard way: import {DayPilot, DayPilotScheduler} ...

Answered: Calendar RTL compatibility is in the queue and it’s coming soon (within weeks). Just note that RTL will not be supported for the Scheduler in the near future - this is a much more complex issue than ...

Answered: The latest sandbox build (2025.3.6659) now supports rows.collapse() method and onRowMoveStart event. You can use them to implement this functionality: onRowMoveStart: args => { scheduler.rows.collaps...

Answered: In this particular case, it is by design: The overlaps are resolved on pixel level, not on time level. That is necessary for proper display. The Scheduler enforces a minimum width of 1 px for small e...

Answered: This can happen if the floating time headers are enabled (they are by default). The Scheduler isn’t aware of the custom component content and it uses the default HTML value for the floating divs. You...

Answered: Hi Leo, Thanks for the update. This issue should be fixed now in the latest sandbox build (2025.3.6647). Please let me know if the problem persists.

Answered: This issue should be fixed now in the latest release ( 2025.3.6631 ).

Answered: The TypeScript definitions for these members are now available in the latest sandbox build (2025.3.6621). If there is any problem, please let me know.

Answered: Unfortunately, I’m not able to reproduce the issue. However, I recommend using the UI Builder app to generate a Vue project with the required boilerplate. It lets you download a configured component ...

Answered: This should be fixed now in the latest sandbox build (2025.3.6593). Please let me know if the problem persists.

Answered: Hi Leo, Most likely, it‘s related to the row headers (number of columns, column titles…). You can also try posting the error stack trace.

Answered: Hi Leo, The error #2 should be fixed now. There was an issue with events located next to a disabled parent row ( treePreventParentUsage: true ) when you tried to move them into the disabled row and s...

Answered: Thanks. In such a zoomed-out view, the event width can get very small if you turn off the event boxes feature. With event boxes enabled (that’s the default setting), the event width is aligned with t...

Answered: This looks like a regression of a bug that was fixed in 3.32.1 (incorrect args.cell.start / end in onTimeRangeSelect / onTimeRangeSelected events when heightSpec is set to "BusinessHoursNoScroll" ). ...

Answered: Hi Leo, This should be fixed now in the latest sandbox build (2025.3.6530). Please let me know if the problem persists.

Answered: There is a small delay before the tap-and-hold event action (moving, context menu) is activated (defined by tapAndHoldTimeout ). If the event is deleted during this time, you may see this error. In t...

Answered: The missing TypeScript definitions have been added now in the latest sandbox build (2025.3.6529). The only exception is DayPilot.GanttBeforeCellRenderArgs.cell.areas - this is already available but i...

Answered: In onEventEditKeyDown , the args.element property stores the <textarea> element used for editing. You can get the current text using args.element.value .

Answered: At this moment, the image export of the Calendar component doesn’t work for RTL. This feature is in the queue and it will be implemented in the near future.

Answered: Hi Roman, Since version 2023.4.5839 , the Calendar resources view supports a vertical timeline longer than 1 day. To display only 1 day on the vertical axis, you need to set the days property to 1 . ...

Answered: Hi Leo, It should be fixed now in the latest sandbox build (2025.3.6524). Please let me know if the problem persists.

Answered: This behavior is correct, if you add 10 hours to "2025-06-10T14:00:00" , you will get the end of June 10, which is "2025-06-11T00:00:00" . There is a related setting (the eventEndSpec property) in th...

Answered: Sorry for the confusion, the cell customization is not yet available in the Scheduler in the Lite version. It will be added in one of the future releases.

Answered: Unfortunately, I’m not able to reproduce the issue. If you set custom HTML content of Kanban card, it may interfere with the require event handlers. If you are able to reproduce the problem in the on...

Answered: In the resources view , all-day events are always displayed only in the first matching column. This is by design, because the columns can have arbitrary IDs and dates. If the behavior was different i...

Answered: In the ASP.NET Core Timesheet tutorial, the histogram displayed in the first (frozen) row is calculated using the following logic (in onBeforeCellRender ): onBeforeCellRender: args => { if (args.cell...