LanguageTool not showing suggestions in OpenOffice

Sometimes, when I right-click in an underlined sentence, the LT pop-up doesn’t appear (see screenshot).

In older releases (can’t remember the last tested) I never had any problems.

What could be causing it?

Thanks!

opensuse 42.2
libreoffice 5.2.3.3
LT 1.0.9 for FF
LT 1.07 for Chrome

same for me with libreoffice and FF addon and chrome addon

i made an error.
no problem using https://languagetool.org/api/v2