Multiselect Popup doesn't hide after Button click while GroupBy is activated

[ZMI Dev]

We search a long time for a specific bug and we think we could figure it out now and describe it to you a little bit. We can't solve it at our end so we have to post it here. You can check it in the example project in the attachements, too.

How to reproduce:
1. start Project

2. Click into the Multiselect control

3. just scroll into the list (up and down)

4. instantly click a button which closes the Dialog

5. now the MultiSelect Popup stays visible and cant be hiden anymore

(Optional) 6. 
- if you click somewhere else now, you get the following error in the developer tools too:

That also happens if the GroupBy is not activated, but then the Popup hides correctly

Further informations:

- This only happens, if the GroupBy="Group" Is implemented in the MultiSelectFieldSettings

- If you click somewhere else before, the issue doesnt exist

Please help and let us know how to fix this ASAP.

Beste regards.

Attachment: MultiSelectTest_99cf2be0.zip

[Yohapuja Selvakumaran]

Hi Dev,

Thank you for sharing the sample and the detailed steps to replicate the issue.

We have thoroughly validated the reported behavior and attempted to reproduce it on our end. However, we were unable to replicate the issue. When scrolling the MultiSelect popup up and down and then closing the dialog, the popup closes as expected.

For your reference, please check the attached GIF demonstrating our test results.

Could you please confirm if there are any additional steps or specific configurations that might be affecting the behavior? This will help us further investigate the issue.

Regards,

Yohapuja S

[ZMI Dev]

Hi, that's curious.

We can reproduce it mostly every try.
Maybe click also an item after scrolling or try it more often to reproduce it. We tried it many times on multiple Pcs and doesn't change anything at the source code. It is 100% like in the attached project above.


Maybe some additional infos:
- it doesn't matter which browser we use
- our Visual Studio Version is 17.13.3
- we use your 28.2.11 but we also hat this in an earlier version
- we recognized, that a bigger window reproduces the error more often, if you use the small responsive view with the burger menu, than the error doesn't appear

In the following our workflow to reproduce in the attachments.

Attachment: Workflowgif_bc131dcc.zip

[ZMI Dev]

It still happens in the 31.1.20 Version

[YuvanShankar Arunagiri]

We have checked and confirmed the issue as “MultiSelect popup stay when we scroll and close the dialog quickly” and logged a defect report. We will include the fix for this issue in the upcoming weekly patch release scheduled for 11^th November.

 

Feedback link: https://www.syncfusion.com/feedback/70947/multiselect-popup-stay-when-we-scroll-and-close-the-dialog-quickly

 

You will be informed regarding this once the fix is published.

 

Disclaimer: “Inclusion of this solution in the weekly release may change due to other factors including but not limited to QA checks and works reprioritization.”

 

Note: We are currently reviewing the MultiSelect component behavior in combination with the Dialog component at the source level. Depending on the feasibility, a solution may be provided either at the sample level or, if applicable, as a source-level fix. We will share our findings as promised.

[Priyanka Karthikeyan]

Hi ZMI Dev,

We apologize for the inconvenience caused. We are actively working on resolving the reported issue. The complexity involved has made the resolution more challenging than expected. Please be assured that this issue is being addressed and will be included in the upcoming patch release scheduled for end of November 2025. Thank you for your understanding and patience as we work to resolve this matter.

Regards,

Priyanka K

[Kundurthi Naga Siddartha Kundurthi Vennela Prasad]

Hi ZMI Dev,

 

We apologize for any inconvenience you may have experienced. We want to assure you that we take this issue seriously, we have made progress in fixing it. Currently, we are in the testing phase to ensure that the solution works seamlessly.

 

We are delighted to inform you that the fix for this issue is planned to be included in the upcoming Volume 4 2025 release which is expected to be scheduled at the mid of December 2025.

 

 

Regards,

K N Siddartha.

[Kundurthi Naga Siddartha Kundurthi Vennela Prasad]

Hi ZMI Dev,

We are glad to announce that Essential Studio® 2025 Volume 4 Release v32.1.19 is rolled out and is available for download under the following link.

 

Essential Studio® 2025 Volume ... | Announcements Forums | Syncfusion®

 

We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance.

 

We have included the fix for the issue "MultiSelect popup stay when we scroll and close the dialog quickly" with our release version 32.1.19v. So please upgrade your package to the latest to resolve the issue from your end.

Release Notes:  Essential Studio for Blazor Release Notes

Root Cause: 

When the dialog is closed immediately (e.g., during rapid user interaction), the MultiSelect popup is not properly destroyed/closed. This occurs because the popup's hide() method was not being called before the dialog's destroy lifecycle.