Text in squares

Do you want to: Ask a how-to question.
OS version: Windows 11
App version: 8.2.0.143 (x64 exe)
Downloaded from: ONLYOFFICE website.
Additional information:
When I launch documents, some text is enclosed in a square box. Please help me to fix it.

Hello @politeh

Please check out this reply to the similar post:

Closing this topic as a duplicate.