Composition tabs getting added to content types using composition

[arknu]

I have a composition like this:

<?xml version="1.0" encoding="utf-8"?>
<ContentType Key="8db42aba-83ae-4633-9c2f-ae89a4bace27" Alias="topImage" Level="2">
  <Info>
    ...
  </Info>
  <Structure />
  <GenericProperties>
    ....
  </GenericProperties>
  <Tabs>
    <Tab>
      <Key>a84e3053-5f85-4302-95cb-f35f6710eeb0</Key>
      <Caption>Indhold</Caption>
      <Alias>indhold</Alias>
      <Type>Tab</Type>
      <SortOrder>5</SortOrder>
    </Tab>
  </Tabs>
</ContentType>

Since v16 it seems that these tabs are also added to any content types using this composition.

This is diff of doing an export in v16, showing how the tab from the composition is now added to pages using this composition as well.

This then results in this error on import:

uSync version 16.1.0 on Umbraco 16.4.0-rc

The site is also running uSync.Complete.

This is the full exception:

["ContentTypeHandler"] ImportElement Failed : "System.ArgumentException: An item with the same key has already been added. Key: indhold at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior) at System.Collections.ObjectModel.KeyedCollection`2.AddKey(TKey key, TItem item) at System.Collections.ObjectModel.KeyedCollection`2.ChangeItemKey(TItem item, TKey newKey) at Umbraco.Cms.Core.Models.PropertyGroupCollection.ChangeKey(PropertyGroup item, String newKey) at Umbraco.Cms.Core.Models.PropertyGroup.set_Alias(String value) at uSync.Core.Serialization.Serializers.ContentTypeBaseSerializer`1.DeserializeTabs(TObject item, XElement node) at uSync.Core.Serialization.Serializers.ContentTypeSerializer.DeserializeCoreAsync(XElement node, SyncSerializerOptions options) at uSync.Core.Serialization.SyncSerializerRoot`1.DeserializeAsync(XElement node, SyncSerializerOptions options) at uSync.BackOffice.SyncHandlers.SyncHandlerRoot`2.DeserializeItemAsync(XElement node, SyncSerializerOptions options) at uSync.BackOffice.SyncHandlers.SyncHandlerRoot`2.ImportElementAsync(XElement node, String filename, HandlerSettings settings, uSyncImportOptions options)"

[KevinJump]

Hi can you share your usync files with us (feel free to send kevin@jumoo.co.uk) - I am not seeing this with stuff locally, it might be a certain setup that it happens.

[arknu]

@KevinJump Thank you. Have sent the files via e-mail.

[WillemPakProudNerds]

Hi,
We've run into the same issue. When a document type has a tab that is inherited from a composition and a property is added to the same tab, usync fails to run in the other environments (test, acc, prod).
Is there a fix for this issue?
We are using Umbraco v16.4.1 and uSync v16.1.0