I have a cdkDropListGroup with multiple tables (with the mat-table directive) that I am trying to set up drag and drop so that elements within the table can be rearranged or dragged to another table. However, when the data for the drag and drop lists is re-instantiated, the item doesn't drag and an error is logged in the console. Here is a stackblitz recreating the issue. Try to drag rows between tables or within tables a few times, the errors should appear and the drag and drop should get stuck every few attempts. How to fix this problem since in my actual code this data is coming from some http service and must be re-instantiated and the tables must be repopulated every time an item is drag and dropped to a new position?
https://stackblitz.com/edit/angular-e3ajdt
And here is the error I see.
zone.js:192 Uncaught TypeError: Cannot read property '_getSiblingContainerFromPosition' of undefined
at DragRef._updateActiveDropContainer (drag-ref.ts:727)
at SafeSubscriber.DragRef._pointerMove [as _next] (drag-ref.ts:505)
at SafeSubscriber.__tryOrUnsub (Subscriber.ts:270)
at SafeSubscriber.next (Subscriber.ts:212)
at Subscriber._next (Subscriber.ts:141)
at Subscriber.next (Subscriber.ts:101)
at Subject.next (Subject.ts:68)
at HTMLDocument.handler (drag-drop-registry.ts:127)
at ZoneDelegate.invokeTask (zone.js:421)
at Zone.runTask (zone.js:188)
DragRef._updateActiveDropContainer @ drag-ref.ts:727
DragRef._pointerMove @ drag-ref.ts:505
SafeSubscriber.__tryOrUnsub @ Subscriber.ts:270
SafeSubscriber.next @ Subscriber.ts:212
Subscriber._next @ Subscriber.ts:141
Subscriber.next @ Subscriber.ts:101
Subject.next @ Subject.ts:68
handler @ drag-drop-registry.ts:127
ZoneDelegate.invokeTask @ zone.js:421
Zone.runTask @ zone.js:188
ZoneTask.invokeTask @ zone.js:496
invokeTask @ zone.js:1540
globalZoneAwareCaptureCallback @ zone.js:1598
setTimeout (async)
scheduleTask @ zone.js:2075
ZoneDelegate.scheduleTask @ zone.js:407
Zone.scheduleTask @ zone.js:232
Zone.scheduleMacroTask @ zone.js:255
scheduleMacroTaskWithCurrentZone @ zone.js:1114
(anonymous) @ zone.js:2090
proto.(anonymous function) @ zone.js:1394
hostReportError @ hostReportError.ts:7
SafeSubscriber.__tryOrUnsub @ Subscriber.ts:276
SafeSubscriber.next @ Subscriber.ts:212
Subscriber._next @ Subscriber.ts:141
Subscriber.next @ Subscriber.ts:101
Subject.next @ Subject.ts:68
handler @ drag-drop-registry.ts:127
ZoneDelegate.invokeTask @ zone.js:421
Zone.runTask @ zone.js:188
ZoneTask.invokeTask @ zone.js:496
invokeTask @ zone.js:1540
globalZoneAwareCaptureCallback @ zone.js:1598
preview-ee4d58d6ef0576b4e139b.js:1 Unhandled Promise rejection: Cannot read property 'getItemIndex' of undefined ; Zone: <root> ; Task: Promise.then ; Value: TypeError: Cannot read property 'getItemIndex' of undefined
at eval (drag-ref.ts:710)
at ZoneDelegate.invoke (zone.js:388)
at Object.onInvoke (ng_zone.ts:273)
at ZoneDelegate.invoke (zone.js:387)
at Zone.run (zone.js:138)
at NgZone.run (ng_zone.ts:171)
at DragRef._cleanupDragArtifacts (drag-ref.ts:700)
at eval (drag-ref.ts:577)
at ZoneDelegate.invoke (zone.js:388)
at Zone.run (zone.js:138) TypeError: Cannot read property 'getItemIndex' of undefined
at eval (https://angular-e3ajdt.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-drag-drop.umd.js:895:56)
at ZoneDelegate.invoke (https://angular-e3ajdt.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:388:26)
at Object.onInvoke (https://angular-e3ajdt.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/core.umd.js:16186:37)
at ZoneDelegate.invoke (https://angular-e3ajdt.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:387:32)
at Zone.run (https://angular-e3ajdt.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:138:43)
at NgZone.run (https://angular-e3ajdt.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/core.umd.js:16100:32)
at DragRef._cleanupDragArtifacts (https://angular-e3ajdt.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-drag-drop.umd.js:883:22)
at eval (https://angular-e3ajdt.stackblitz.io/turbo_modules/@angular/[email protected]/bundles/cdk-drag-drop.umd.js:363:23)
at ZoneDelegate.invoke (https://angular-e3ajdt.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:388:26)
at Zone.run (https://angular-e3ajdt.stackblitz.io/turbo_modules/[email protected]/dist/zone.js:138:43)