According to https://www.insynchq.com/downloads, version 188.8.131.52955 added support for Dolphin file manager overlay icons. But in my laptop (KDE Neon 5.21 fully updated) it doesn’t work, i.e. not overlay icons are showed.
When I launch Dolphin from console I get this message:
kf.kio.widgets: The "Insync" plugin still installs the desktop file for plugin loading. Please use JSON metadata instead, see KAbstractFileItemActionPlugin class docs for instructions.
Is this a problem with my current setup or there is something wrong with the Dolphin support?