Sidebar reset after upgrading to version 3.7.24

Hi.

I lost all the sidebars settings after updating to 3.7.24. They got back to a default wordpress installation.

I tried exporting and re-importing settings and this did not work. I also try to save all the different settings after updating and this did not work either.

Reverting to version 3.7.23 solved the problem.

Any suggestion? thank you.