ComboBoxAdv SelectedItems is unchanged when item removed from ItemsSource

Question

There is (probably) a bug with ComboBoxAdv with multi-select enabled, when removing an item from binded ItemsSource collection and the item is selected, the item still exist in SelectedItems collection and not removed, and also it cannot be removed in code (tried it as a workaround)

Just to clarify:

1) The bound collection is ObservableCollection

2) The item does dissappear from ComboBoxAdv list of items to select from, so the collection view is updated correctly, but behind the scenes the removed item is still selected and exists in SelectedItems collection of ComboBoxAdv

Thanks,

Dmitri.

Mahalakshmi Sugumar · Answer

Hi Dmitri,We have confirmed the reported scenario is a defect and logged a
report for the reported scenario “ComboBoxAdv SelectedItems API not updated
when item removed from ItemsSource collection”. We will provide the patch for
the reported issue on 18th March 2022.  You can track the status of this defect using the following
feedback link:        https://www.syncfusion.com/feedback/33011/comboboxadv-selecteditems-api-not-updated-when-item-removed-from-itemssourceIf you have any more specification replication procedures or a
scenario to be tested, you can add it as a comment in the portal.Please let us know if you need any further assistance.Regards,Mahalakshmi S

Mahalakshmi Sugumar · Answer

Hi Dmitri,We have fixed the reported issue -
“ComboBoxAdv
SelectedItems API not updated when item removed from ItemsSource collection”. Please
find the patch file from the following location:     V19.4.0.38

Recommended approach – exe will perform automatic
  configuration                  
  Please find the patch setup here:  
      
  https://syncfusion.com/Installs/support/patch/19.4.0.38/1436975/F173182/SyncfusionPatch_19.4.0.38_1436975_3222022034919817_F173182.exe 
  
  Advanced approach – use only if you have specific
  needs and can directly replace existing assemblies for your build
  environment                                   
  Please find the patch assemblies alone
  from:      
  https://syncfusion.com/Installs/support/patch/19.4.0.38/1436975/F173182/SyncfusionPatch_19.4.0.38_1436975_3222022034919817_F173182.zip
  
  Please find the NuGet from the location below:     
  https://syncfusion.com/Installs/support/patch/19.4.0.38/1436975/F173182/SyncfusionNuget_19.4.0.38_1436975_3222022034919817_F173182.zip

Installation
Directions:           This patch should replace the files
"Syncfusion.Shared.WPF” under the following
folder.           $system drive: \
Files\Syncfusion\Essential Studio\$Version #
\precompiledassemblies\$Version#\[TargetFramework]    
      E.g.: $system drive:\Program
Files\Syncfusion\Essential
Studio\19.4.0.38\precompiledassemblies\19.4.0.38\4.6 To automatically run the Assembly
Manager, please check the Run assembly manager checkbox option while installing
the patch. If this option is unchecked, the patch will replace the assemblies
in precompiled assemblies’ folder only. Then, you must manually copy and paste
them to the preferred location, or you must run the Syncfusion Assembly Manager
application (available from the Syncfusion Dashboard, installed as a shortcut
in the Application menu) to re-install
assemblies.           https://www.syncfusion.com/support/directtrac/patchesDisclaimer:                                 Please note that we have created
this patch for version 19.4.0.38 specifically to resolve the issues reported in
this forum #173182. If you have received other patches for the
same version for other products. This fix will be included in our Volume 1
release which will be available in March 2022.Please let us know if you need any
further assistance.Regards,Mahalakshmi
S