Arrow keys not working in invoices

I installed the latest version of software (Manager 16.1.12) and I have found a new problem.
When I try to navigate up and down to choose Items from drop-down menu, the arrow keys not working (In invoices, cash account and etc.). Is there anyone confront with same problem?

What operating system? And which dropdown fields. I spent quite a bit of time hunting and could not find a field where the arrow keys did not work. I’m running Mac OS X 10.11.2 and Manager v16.1.11.

Windows 7- 64 bit. for example account drop-down menu in sale invoice.

There is another post for this problem here