When using OnlyOffice online documents, the spacebar width is inconsistent. However, when the OnlyOffice online document is downloaded to the local computer and opened with Office software, the spacebar width is consistent.
The paragraphs in the screenshot are justified; changing them to left alignment makes the spacebar width consistent in OnlyOffice. I believe this is a bug.
Docker (DocumentServer 9.4)
Google Chrome 151.0.7922.173
Could you please clarify whether the issue is reproduced with any font or only with a particular one? If it occurs only with a specific font, please let us know its name. If this is a custom font, please attach the font file as well.
Also, please check whether the behavior is reproduced in a newly created document using the same text and font, or only in the original document.
Once we have these details, we will investigate the rendering difference.