https://github.com/OpenPrinting/foomatic-db-engine/blob/a2b12271e145fe3fd34c3560d276a57e928296cb/lib/Foomatic/DB.pm#L5572-L5573 min-width and min-height are hard-coded to 36 points, which is 12.7 mm. This is too much for label printers.
foomatic-db-engine/lib/Foomatic/DB.pm
Lines 5572 to 5573 in a2b1227
min-width and min-height are hard-coded to 36 points, which is 12.7 mm.
This is too much for label printers.