Issue

Bottom buttons disappear in Beas.

Solution

This is a problem of SAP Fiori and scale issue.

The solution requires changing the buttons position in Admin > System initialisation > Work station setting wizard:

Then you have to find correct number for your case (it can be any number not just 65-70).

Please, be aware that you shall try different numbers until you can see the buttons again.

Examples how to find the correct number 

First search +-1 until partially can be visible (always use tab when you insert new number, you'll see result immediately)

Then search +- to get best position

For example, 65 -> tab -> buttons not visible -> 70 -> buttons partially visible then search +-1 to find the correct number.