On latest OsClass if you deactivate a listing you can still view it via URL and without any notification that listing is deactivated. It’s ok to be seen via URL so it still shows on Google results but it should have a notification that item is deactivated, like it’s for items marked as sold.
Moreover phone and message should be disabled for deactivated listings.

Correct, so user that created listing without login can see this listing.
Listing is not in search and is not included anywhere on site, so cannot be found by visitors.

Correct, so user that created listing without login can see this listing.
Listing is not in search and is not included anywhere on site, so cannot be found by visitors.

User created that listing being logged in. Anyone can see it, it can be found on google by customers and they will send message and/or call seller to ask about the item, you should definitely add notification that listing is deactivated.

Noted.

Noted.

Any ETA to fix this?

Checked, inactive listing is 404 for user that does not own listing or user that is not logged as admin.
You can test:
https://dev7.abprofitrade.eu/en/for-sale/dvd/cds-records/delta-8-thc-disposable-vape-variety-4-pack-bundle-i5632

For me it’s still visible by anyone via URL. It’s ok to still be visible but has to have a message that it’s deactivated, like it’s for “mark as sold”.

Checked, inactive listing is 404 for user that does not own listing or user that is not logged as admin.
You can test:
https://dev7.abprofitrade.eu/en/for-sale/dvd/cds-records/delta-8-thc-disposable-vape-variety-4-pack-bundle-i5632

Should not be marked as solved because for me I can still see listings that are inactive and posted by others.

Admin can see inactive listings.

I told you a few times I do not browse as admin and I can still see deactivated listings via URL.

If listing is not activated and user is not owner of listing, it goes to 404.

Test: https://plugins4.abprofitrade.eu/for-sale/musical-instruments/kawasaki-x98d_i2853

I keep telling you on my website this doesn not happen but you seem to ignore this issue. It means it might be a problem from zeta theme or from one of the 20 plugins I installed