MRZ is recognized only upside down

Hello,

 

On my TC75 the MRZ is decoded only when the passport page is presented upside down in front of the scanner window.

The default TravelDoc template is used with the standard demo app

 

Demo app version: 2.4,  SimulScanEngine: 1.9.1

OS 11-04-00-MV

 

Checked on another unit with freshly installed OS - the same...

What can be the reason?

 

Thanks,

Valery