Textfield: Entering characters is too slow

Putting 32 characters into a barcode field one by one is very slow in Firefox and slow in Chrome in some environments.
Example:

• Barcode field for check-in of Check-in app: http://folio-testing.aws.indexdata.com/checkin
• Barcode of user edit screen in Users app: http://folio-testing.aws.indexdata.com/users?layer=create&sort=Name

Reproduce it using a barcode scanner, or hold down a key on your keyboard with fastest auto-repeat enabled, or quickly (and randomly) press many keys on your keyboard. (This does not occur when pasting 32 characters in one go.)

See attached video.