I have this problem that my post content area doesn't display sometimes.
It will just display like the post topic area until i will have to collapse the text-area.
What would be the cause of this problem please?
I even increased the min-height from the default min-height yet the problem still occasional happen.
See attached a typical example
Can you delete all caches, disable all other plugins, then navigate to forum front-end and press Ctrl+F5 to reset the browser cache as well? If it's fixed, activate plugins one by one and check, so you'll find the problem maker.
Also, I'd recommend you to check it on other devices and browsers. This could be a divide issue as well.