Hi @maddyssonn,
I think this is a CSS conflict with the theme or active plugins. Please leave some example URL to allow us to debug the conflict.
Hi (@maddyssonn,
Put the following CSS code in “Custom CSS code” textarea, located in the Dashboard > Forums > Setting > Styles admin page, save it, delete all caches and check again. Don’t forget to press CTRL+F5 on frontend before checking.
#wpforo-wrap .wpforo-post .wpforo-post-content p {
line-height: 13px !important;
}
If you want you can change the 13px and make it smaller.