MyBB Community Forums

I did nothing, the forum has changed on its own. I think the codes have their own artificial intelligence ... Suddenly all the categories and the site extended sideways.

True: https://hizliresim.com/BwMPCY

False: https://i.hizliresim.com/AaTpKN.png

hard refresh your browser [eg. press CTRL + F5] - does it return to normal view ?
if it doesn't then try with a different web browser. And what is your forum url ?

did you use clouflare?
did you cache everything?