@frans-blok Have you performed a conflict test yet?
Try deactivating all plugins except for WP-Optimize and see if it is resolved.
If so, reactivate each plugin one at a timeuntil you find the culprit. You can check for the issue between activating each plugin, so you can see which one is causing problems.
Please let us know your findings.
Thanks for your reply. I didn’t do the deactivate-all-plugins test yet, but when I temporarily disabled the page caching in wp-optimize the issue was gone. Then I did some further research and found out that probably plugin Polylang is the culprit. It seems to be a common conflict between Polylang and cache plug-ins:
“When the front page is visited, redirects to itself in the browser preferred language. As this doesn’t work if it is cached, Polylang will attempt to disable the front page cache for known cache plugins”
So I deactivated the “detect browser language” in Polylang, which should solve the issue. And it did, for a while but then it happened again.
Now I’m wondering if excluding the front page from caching would be a good idea.
-
This reply was modified 3 years, 10 months ago by
Frans Blok.
@frans-blok Yes, please try to add your site url to “URLS to exclude from caching” in WP-Optimize > Cache > Advanced settings and check if it helps to fix the issue?
It seems to work now. I had not only to add the site url to the “urls to exclude”, but also keep the http to https redirect in another plugin, Simple 301 Redirects. So now there are three plugins interacting in a way that I don’t yet completely fathom. But as long as it works, I’m happy. Thanks for the support.