Hello,
Any updates regarding this matter?
We seem to have the same issue, after generating a Word document (using a dotx containing a borderless table with one cell) through Aspose and uploading it to SharePoint, Word Online is not able to edit the document. After opening the Document in Word (Desktop, without changing anything to the document) and Saving it through Save-As using the same output-format (docx) Word Online is able to open it for edit.
Reproducable using the provided files in the attached zip (and latest java libraries from aspose).
We also found a workaround, adding a full border to the table will make the document edit-able in Word Online. However no-border does not work in any cases we tried.
Hoping to get an update for this as soon as possible. As one of our requirements is being able to edit the document in Word Online.