Strange behavior with elementor

[luckysistemi]

I have tens of site working well with elementor and wp-stateles
They are all almost identical in terms of plugins, version and configuration.

In one of this wp stateles doesn't see there are compatibility files to manage.
I see this since:

• no files are synced
• in sync tab I see "Total items:0" in compatibility files

What should I check to understand why?
What information are helpful to report here to let you help me?

[antonkorotkov]

Do you still have issues with it?

[luckysistemi]

Yes.
I'm not able to understand the reason, so I can't imagine what look for

[antonkorotkov]

@luckysistemi Is the Compatibility enabled for Elementor in the Compatibility tab?

[luckysistemi]

Yes it is.
As I wrote, I have tens of sites correctly working. All with the same configuration, all in the same server, all with the same versions.
I've already tried to remove and reinstall both elementor (PRO) and wp-stateless. Nothing has changed.
I've also manually copied plugin directory from other working site.
The table in the DB has been created by the plugin setup

So I don't know what else check

[antonkorotkov]

@luckysistemi well, this is something unusual. For Elementor, its files appear on demand when you visit any page that has styles to be generated.

Do you use any caching plugins that may prevent Elementor CSS files from generating?
Maybe you have logging enabled and any related entries in debug.log?

Also, you can try Elementor => Tools => Regenerate CSS?

[luckysistemi]

Already tried to regenerate files and no cache plugin are in this site
Log file is empty

[luckysistemi]

another new site with the same behaviour
some suggestion of what to check?

It's a clean installation