MarkFirstMatch and Filter functionalities are not supported when checkboxes are enabled, as specified in the Checkbox Support help article. If you remove these two functionalities, the Check All checkbox works as expected. I want to have on the MarkFirstMatch and the filter on and the "all" to be shown. see ticket number 942452
Hi Ray,
I am declining this FR item, since the implementation will introduce a breaking change which we want to avoid.
Nevertheless, you can implement a custom filter and MarkFirstMatch as shown in this KB article
or take advantage of our relatively new MultiSelect component.
Regards,
Rumen
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