Push Button and Radio Button Labels Display in the Wrong Character Set

I was working on converting our forms from 11g (version 11.1.2.2.0) to version 12.2.1.3.0 with no major problems.

Then the CTO decided to convert to version 12.2.1.4.0 instead.

In version 12.2.1.4.0, the labels of radio buttons and push buttons appear in Western European special characters instead of in Hebrew in the Layout Editor of the Forms Builder. 

I do not have this problem in version 12.2.1.3.0 : 

1. The 12.2.1.3.0 Forms Builder displays the labels correctly for forms compiled in either versions. 

2. The 12.2.1.4.0 Forms Builder displays the labels incorrectly for forms compiled in either version.

3.  I get the same results if I convert the forms from 11g to