Alternatively a decent way around would be to patch the .desktop file.
Basically:
9c9
< Exec=/usr/bin/onlyoffice-desktopeditors %U
---
> Exec=/usr/bin/onlyoffice-desktopeditors %F
Confirmed working there: https://forum.endeavouros.com/t/pcmanfm-open-and-save-files-with-onlyoffice/36490
Edit: realized this was also already addressed by @Freed below. This patch is definitely possible here, since desktop files are part of the post-compile files.
Pinned Comments
Antiz commented on 2024-10-17 18:28 (UTC)
This package ships the OnlyOffice Desktop Editor, not the OnlyOffice Document Server.
Please, make sure that you are referring to the correct software when flagging this package out of date :)