Forum post display - text wrap in narrow or wide space
 

Searched & didn't find where this has been addressed. I will study the documentation as well on post display if someone will point the way to it.

Example thread (topic/content not relevant.) On my browser anyway, post #1 text is wrapping and leaving an empty space to the right. The following posts are wrapping to fill the post space all the way to the right margin. I don't want the post #1 wrap format, looks squashed and wastes vertical space, more scrolling to read.

What setting do I need to adjust to be sure all post content will display with the text going all the way to the right margin before wrapping?