I have noticed the same problem in our OJS installtion. The problem only seems to exist when I’m logged in as a user, which is registered in several journals. When I’m registered in just one journal the link refers to the journal’s submission page. But I also believe this is at least a usability problem and the link at the journal logo in the backend should always go the journal’s submission page, not to the homepage of the OJS site frontend.
I have made a change in the template
/ojs/lib/pkp/templates/common/header.tpl
Old code
{if $currentContext && $multipleContexts}
{capture assign=homeUrl}{url journal="index" router=$smarty.const.ROUTE_PAGE}{/capture}
{else}
{capture assign=homeUrl}{url page="index" router=$smarty.const.ROUTE_PAGE}{/capture}
{/if}
New code
{if $currentContext && $multipleContexts}
{capture assign=homeUrl}{url page="index" router=$smarty.const.ROUTE_PAGE}{/capture}
{/if}
Now the link always refers to the journal’s frontend homepage.
In the frontend there’s a similiar problem I have mentioned here Link at Page Header Logo Image refers sometimes to Site, sometimes to Journal