pereznat on "[Theme: Customizr] Sidebars disappeared"

Hello! Upon updating to the lastest version of both WP and Curtomizr, my global default layout (2 sidebars: Right and Left) is no longer being applied when there are no widgets active in the sidebars. This was not the case before the update.
I want my pages and posts to appear centered on the screen, but I do not want to use any widgets in the sidebars, to avoid clutter. Things to know:
1) I have the option "Force default layout everywhere" checked;
2) I have tried briefly reverting to the Twenty Thirteen theme and then back to Customizr, but it did not resolve the issue;
3) I have tried deactivating all plugins, also with no success.
Is there a way to make both sidebars show again, but without using any widgets? Alternatively, I could also use help applying custom css that would make my pages and content centered on the screen.
Thanks!
Here's my website, fyi: http://pereznat.userpage.fu-berlin.de/wordpress/about-teeme/