Hi Sarah,
Greeting from Syncfusion support!
Thank you for reaching out to us with your concern regarding the usage of SfMultiSelect components in SfDialog. We appreciate your detailed explanation of the issue you've encountered when users utilize the Enter key for selecting SfMultiSelect items, triggering the execution of OnValidSubmit.
After carefully reviewing your concern, we attempted to replicate the issue using SyncFusion version 23.2.4, but unfortunately, we were unable to do so. To better assist you, we've prepared a sample below for your reference:
Please take a moment to review the sample and modify it based on your specific scenario that replicates the issue. If possible, providing us with a video illustration of the problem would be immensely helpful. With these details, we can offer a more accurate and prompt solution to address your concerns.
Attachment:
BlazorServerProject_ce65f0c1.zip