Good morning
I installed the latest version of Discourse AND Jounal…and the bug is still there
To find the cause I deactivated certain plug-ins and Theme Components.
And I found the one that is incompatible.
Once disabled, no more bugs. 
If with this information you have a solution…I’m interested 
It’s much less critical:
The Theme Composent allows me to translate the text of the button into French and provide context “in my use case”…
…the original text being explicit 