Thank you
Done

Xhat is fun, is that the space for the bar is reserved, visible on the top, just not fill and not reactive (not just transparent)

Checking the homepage sourcecode
I see this
@media screen { html { margin-top: 32px !important; } }
@media screen and ( max-width: 782px ) { html { margin-top: 46px !important; } }
@media print { #wpadminbar { display:none; } }

To be perfectly clear, it is the whole wptoolbar which have dissapeared, form all the website pages, except when i am in the admin section. And when switching to an other theme, it comes back.

I suspect the conflict comes from Armember, as the bar dissapeared short after an update of this plugin. But even when disableing it, it remains the same. I also have checked the WP-footer, which doesn’t seems to have problems.

Nope

Hello,
No jetpack, neither buddypress/yeost. I had already tried to disable Redis (object cache), WP Rocket and ARmember without success. I disabled all plugins that could have a impact on home/articles page one after the other without success.
Thanks