1419420 - Barcode Reader skipping numbers

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[derek]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36

Steps to reproduce:

Hi,

We use many types of barcode reader to enter numbers for order tracking. Before the Firefox update to Quantum there were no issues. Since the update all of our machines across different brands of barcode reader show the last but one number gets consistently missed out of text entry.



Actual results:


For example when scanning a barcode in Firefox Quantum:
Value parsed: 784357


Expected results:

Barcode correct value: 7843567

The bug is now consistent, repeatable and present across many brands of barcode reader which started with the Quantum update. Pre update there were no issues with barcode entry. Barcode entry continues to work correctly in both Chrome and Edge, there are no issues with the scanners or software in any other application apart from Firefox Quantum.

Hope you fix it soon :)

Comment 1

[Kohei]

Firefox doesn't have barcode reader functionality. Please report the issue to the developer. Thank you!

Comment 2

[derek]

Maybe you misunderstand the issue, this is not a barcode reader problem. It is an input issue where a series of numbers gets entered from a barcode reader. The problem only happens in the latest update of Firefox Quantum and was not present before the update.

Comment 3

[Mike Conley (:mconley) (:⚙️)]

Would you be able to record a quick screen recording to show us the bug? Or, even better, is it possible for us to have access to the page where the bug is being experienced?

Comment 4

[jim]

I can validate the complete observation of the OP, including behavior pre and post Quantum. 

The barcode scanner acts as a keyboard (i.e., a keyboard "wedge" via Bluetooth), so it is nothing specific to the barcode scanner itself. My observation is that the 6th digit is inconsistently dropped (the OP's example is similar): barcode 65705724 will yield 6570524. 

Chrome, Edge, and all text editors accurately capture the output. 

The problem is almost completely eliminated, with rare exception, by inserting a 20 ms delay between transmission of characters (programmable in the scanner).

FF 59.0.2 (64-bit)