Issue: "Notify me" button doesn't display

Solution:

Edit file 

edit file app/code/Bss/ProductStockAlert/view/frontend/web/css/source/_module.less

line 56-73

.products-grid {
   .product-item-info:hover, .product-item-info.active {
      .notify_me_bss {
         display:block;
      }
   }
   .product-item-details {
      .product-item-actions {
         margin: 0 0 10px;
      }
   }
}

.product-item-info {
   .notify_me_bss { 
      display:none;
      margin-bottom: 10px;
   }
}

to

.product-items {
   .product-item-info:hover, .product-item-info.active {
      .notify_me_bss {
         display:block;
      }
   }
   .product-item-details {
      .product-item-actions {
         margin: 0 0 10px;
      }
   }
   .product-item-info {
      .notify_me_bss {
         display:none;
         margin-bottom: 10px;
      }
   }
}