I have this problem!
I have read this:
"The reason for this is usually a conflict with a system plugin in Joomla!. That doesn't mean those with Joomla! supplied system plugins (core) are meant, but which are installed by a third-party extension.
To determine the problematic plugin, deactivate the third-party system plugins for testing purposes and check whether the detailed / original images are displayed then."
I have 104 system plugs in. How do I easily evaluate which one is causing the problem?
Do you have a "black list"?