My company has HP Enterprise printers. Duplexing and multi-tray. I've invested tens of thousands of dollars in HP printers. I'm able to use tray 5 . . . single sided. Why?
Because HP Print for Chrome does not support any printer options. It needs to. It is somewhat surprising that it was released to users without such support.
Please don't offer workarounds that are OS-based. The software should work on its own.