Hello,
This is not a bug. Since v5.111, AdwCleaner has a new option called "Reset Chrome preferences" which effectively reset all chrome preferences. You can deactivate this option by unchecking it under "Options" menu.
Regards,
Xplode, 2016-04-15 16:58:32 (UTC)
This is stupid since most people have chrome customized to their preferences and don't want to do it all over again just because someone behind AdwCleaner decided to erase everything in chrome enabling this option on default without user permission and knowledge. This option definetely should be disabled on default. We were not informed about this and me personally don't want to experience similar "surprises" in the future. Because of AdwCleaner i had to set everything all over again.