DayPilotRegression: 2026.3.6988 breaks init/loading
Answered: Hi Leo, This fix is now available in the latest release ( 2026.3.6993 ). Thanks for reporting the issue.
Questions Tagged bug
Events start to stack vertically when very small
Answered: eventStackingLineHeight is not something we want, conflicting events should stack in a new line 100%. we already implemented the line property before and it wasn’t helping. Now we also added event.co...Admin scheduler crash after moving a waitlist hold in week view
Answered: Yes, could you please create a sample project that reproduces the issue and upload it here or send it to support@daypilot.org?Scheduler in Angular: onTimeRangeSelected popup/menu opens at wrong coordinates after horizontal scroll
Answered: The standard UI behavior for context menus is to hide them when a page scrolls (this is also what the browser does with the built-in menu). So I recommend hooking the scroll/wheel event and hiding th...Scheduler issue from /srv/clinicflow/ui-investigation
Answered: You can attach the sample here. If you don’t want to share it publicly, you can send it to support@daypilot.org.SchedulerBeforeEventExportArgs missing `text` field
Answered: This should be fixed now in the latest sandbox build (2026.2.6953).Error init_runtime_dom_esm_bundler is not defined after update on May 20, 2026
Answered: Unfortunately, I’m not able to reproduce the error. There was no Vue-related change in the latest release (i.e. between 5.6.0 and 5.7.0). I recommend checking it with a blank project generated using ...Issue with Cell Border Selection and Event Handling
Answered: This bug should be fixed now in the latest sandbox build (5.8.0-sandbox.830).Github - Invalid dependency patterns detected in package.json
Answered: If your internal system forbids loading packages using direct https link, I recommend uploading it to your private registry (TMNA Artifactory).Infinite scrolling issue, Chrome on Mac
Answered: Hi Leo, There is a problem with the overlay (non-persistent) scrollbar: it is not possible to detect its actual height. So the Scheduler uses a guess value (which is now 14 pixels). If it doesn’t mat...Critical regression: Infinite scrolling jumps
Answered: The overlay scrollbar fallback is applied only to selected browsers (Firefox everywhere and Webkit on Mac). In Webkit-based browsers you can force a fixed scrollbar (as described here ) to solve this...Cannot set properties of null (setting 'innerHTML') on disposed instance
Answered: This should be fixed now in the latest sandbox build (2026.2.6904).DayPilot.Calendar.getCoords() sometimes contains wrong information
Answered: The getCoords() method returns the position in the grid. If you are not in the grid anymore, it returns the last position. So when the mouse is over all-day events, it doesn’t have a useful value.[Calendar] onEventResize returns incorrect args.newStart with heightSpec="BusinessHoursNoScroll" since v4.2.1
Answered: Thanks for reporting the issue. It should be fixed now in the latest sandbox build (2026.2.815).Scheduler "Manual" scale with empty/undefined timeline error
Answered: This was an unintended side effect and the behavior is now reverted in the latest release ( 2026.2.6899 ). Please let me know if the problem persists.daypilot-lite-angular-5.4.1 | Missing namespace implementation Http
Answered: In the latest release, these interfaces were not marked as exported and they got stripped out of the Angular package during build time. It should be fixed now in the latest sandbox build. The fix wil...Infinite Scrolling: Time jump in Safari
Answered: This issue should be fixed now in the latest sandbox build (2026.1.6856). If there is any problem, please let me know.Infinite Scrolling: Jumping on Firefox
Answered: This issue should be fixed now in the latest sandbox build (2026.1.6844).Submenu does not trigger onClick anymore
Answered: This regression is fixed now in the latest sandbox build (2026.1.6823). If there is any problem, please let me know."dp.events.update(dpEvent)" sometimes redraw all Events on a *Month* calendar
Answered: This optimization is now implemented for the Month control as well in the latest sandbox build (2026.1.6822). If there is any problem, please let me know.Event Slot not always displayed in schedule in vue3 wrapper
Answered: This should be fixed now in the latest sandbox build (2025.4.772, NPM ). It only happens with floating events enabled, so the workaround for the current release would be to disable this feature. Plea...Jumpy infinite scrolling scheduler
Answered: Hi Leo, This issue should be fixed now in the latest sandbox build (2026.1.6812). If the problem persists, please let me know.inconsistent behavior with touch events
Answered: Thanks for the update. This issue should be fixed already (since 2024.2.5936 ). If the problem persists with the latest version, please let me know.Cannot read properties of null (reading 'data') - on Event mouseover
Answered: This happens when the bubble can’t find the source event element properly. There are now additional checks added to the bubble popup logic so you shouldn’t see this error anymore in the latest sandbo...TypeScript for DayPilot.Scheduler.onBeforeCellExport incomplete
Answered: The missing properties are available now in the latest sandbox build (2025.4.6764). Please let me know if there is any problem.DayPilot.CellArray.invalidate
Answered: Hi Leo, The purpose of the invalidate() method is to clear the cached cell customization results (the args.cell.properties values set in onBeforeCellRender ). It doesn’t force a refresh of the cells....TypeScript: Missing args.cell.row on DayPilot.Scheduler.onBeforeCellRender
Answered: Hi Leo, It’s now fixed in the latest sandbox build (2025.4.6726).TypeScript
Answered: Hi Leo, This should be fixed now in the latest sandbox build (2025.4.6721).Export Issue In RTL
Answered: There will be a preview available by the end of this month. I will keep you updated.React Scheduler > Scheduler automatically expands the children of the dragged
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 ).