How to change postbits?

[Shock]

I know it's dumb question but I don't know why my post bits is changed to horizontal and I don't like it.

There is no option to set it to classic in user CP.

 

[Slay]

I used to have this problem, it's a glitch I think maybe. @Philly would have to change it for you, I believe. I may be wrong.

 

[Jaii]

it seems to be a bug with the new mybb update, I think.

A lot of users are experiencing it. Myself, I'm not too fussed.