Changes made to certain files that contain checkboxes are not saved in OnlyOfficeDocs Community integrate with nextcloud/owncloud

Changes made to certain files that contain checkboxes are not saved in OnlyOfficeDocs Community 9.4.0.129 integrated with OwnCloud and/or Nextcloud. The document is edited only online but is not actually updated; in fact, when it is downloaded from the platform, the document remains the old version.