Content Security Policy blocking images from installed plugins’ popup info window, as they are from external domains – global fix?

The answer, as mentioned in a comment by @JacobPeattie, was to add the domains to my .htaccess file where I am setting the CSP Headers, (turns out most plugins’ “View Details” link loads images from ps.w.org, which I just learned). A few other plugins loaded images from other domains, so I also added each of those domain(s) to my .htaccess as well. This looks like:

Header set Content-Security-Policy: img-src 'self' https://ps.w.org/ https://updates.theme-fusion.com/wp-content/uploads/

And so on (I didn’t list all the other domains, just one to show as example. Now all the plugins’ “View Details” images load without error as they are listed in the CSP.

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