use cups printing protocol data error

hello ,

Set the User Code to 99999999 in the browser interface, select "Custom User Code" in the qt advanced settings interface, but when printing, check the log and the usrcode value is Custom
This situation only occurs when customizing User Code
Is this a bug?

I will provide two videos. The first video will introduce how to set up a printing environment, and the second video will demonstrate the problem phenomenon

Need to install the ricoh driver package, and I will also provide it