Reply To: Strange change to page layout
Sounds like this is a theme issue and likely not an issue in regards to the 2014 / 2015 themes.. so you are probably going to have to contact your theme author about this.
You also did not provide any info about your setup – ( https://buddypress.org/support/topic/when-asking-for-support-2/ ) so there is no way anyone could guess about this.. have things changed with bp? quite a bit with some updates, and not so much with others –
you should disable all plugins aside from bp and see if the issue continues first imho.
if so – your theme author will likely have to dig into the issue.