Hi Bruno,
1. I will provide you a temporary fix for this, I have also logged the issue in the tracker and see what can the developer do about it.
2., 3., 4.
Can you apply the code I have provided below into the custom.css file? You can create the file in the directory below if you have not done so.
JoomlaFolder\templates\yourTemplate\html\com_easydiscuss\css\custom.css
Here is the code:
#ed .discuss-list .ed-posts-list .o-flag {
width: 95% !important;
}
#ed .ed-post-item.has-body .o-grid__cell .ed-post-item__title {
font-size: 14px !important;
}
#ed .ed-post-item.has-body .ed-post-item__bd .ed-post-content {
font-size: 13px !important;
}
#ed .social-button.google-share {
width: 200px !important;
}
You can adjust the font size for title and question content in the code.
For the social button, I have enabled Facebook share button for you so you should be able to see it. The text is actually the "
Share this on Google+" text and it was not appearing correctly due to the language in your screenshot having a longer text. The length of text for different languages differ so it is hard to pin point the exact width of the element. You can adjust the width of the google share text too in the custom css code. Hope this helped.