Can't search for Product Variant using the Variant's Barcode or SKU in POS App and also in Shopify

We have the same problem. Support says there was a programming change and suggests using a two part process of entering sku/upc, etc, then filtering - this is of course a labor and time adding process versus what used to work. Maybe one day, programmers will be forced to gain some user insight before making these detrimental changes that damage functionality.