I can not set language of the text in the document: the menu opens an other dialogue box.
Tools - Language - For Selection - More ...
Opened: Character, on the tab "Background".
I tried it in English and Hungarian User Interface, on the portable version, and Hungarian interface on non-portable version (here, maybe this was the For Paragraph).
The other (For Paragraph) is also bad (English, portable).
Thanks for your bug report.
Already reported as 'Bug 39793 - UI · FORMATTING: 'Set Language for Paragraph/Selection > More...' should always open the 'Font' tab (dialog 'Character')'
The tab 'Font' should show the drop-down list 'Language'.
*** This bug has been marked as a duplicate of bug 39793 ***