If they have classic postbit selected in their UCP options it will display like that. Some people (myself for an example) prefer it that way which is why the option is there.
UCP > Edit options > Thread View Options > Tick Display posts in classic mode.
You can also set the global default with:
ACP > Configuration > Show Thread Options > Post Layout and select your choice.
I know this is bringing up a old thread but where it "Suppose" to say classic view it does and i cant change it back i want it the regular way. Also its changing it's self for other users as well.
Do you have any plugins and are you using the latest version of MyBB?
It can't 'change itself'... the ACP and User CP settings are independent from eachother. Changing the ACP has no effect on current members.
same problem facing me MattRogowski
And the same solution applies, the ACP setting will not change the setting for current users.
If you want to enable the classic layout to all the users then you've to use this query:
UPDATE yourprefix_users SET classicpostbit = 1
or if you want to disable it the query becomes:
UPDATE mybb_users SET classicpostbit = 0
Bye
