I suspect that this may have occurred after originally installing BBPress but I’m not sure. I already tried de-activating all plugins with no success.

I even made a fresh WP installation to solve the problem (hence “2” in the url). I used minimal plugins and imported content such as pages, posts, etc, but the template problem is still here. Having done a fresh installation, I’m really baffled here.

I also tried adding the two files you mentioned in the screenshot just in case, but it has not solved anything. I hope the info above helps narrow down a possible cause.

Thank you.