Campaign subpanel data to new Target List not populating all entries

We have a problem when trying to export data from a Campaign inside “Opt-Out” or any other subpanel as it does not export all entries (all but last entry are exported) to the newely created target list.

The problem was fixed when i set the ‘disable_count_query’ to false inside config_override.php

$sugar_config['disable_count_query'] = false;

But does this property impact performance and / or is there another way to solve the problem above instead of using the “fix” i used ?

I think the impact of that on performance is positive, the option is there for when people are getting poor performance. But you will lose the record counts on top of the list views, if I’m not mistaken.

Anyway, if this is a bug you should report it on Github to get a proper fix…