If I enter "BRCA1" I get 0 records (incorrect), however when I enter ensembleID for BRCA1 (ENSG00000012048) I get 7 records (correct).
Probably related/caused by to PT-3467. I think adding the right configuration to the genes suggest in exportData.js (https://github.com/phenotips/phenotips/blob/master/components/widgets/resources/src/main/resources/resources/uicomponents/widgets/exportData.js#L31), i.e. resultId : "ensembl_gene_id", forceFirstId : true might fix it.