Version 1.58.4 -------------- - Now prints a warning when constructing an unregistered object inheriting from GObject (i.e. if you forgot to use GObject.registerClass.) In 1.58.2 this would throw an exception, which broke some existing code, so that change was reverted in 1.58.3. In this version the check is reinstated, but we log a warning instead of throwing an exception, so that people know to fix their code, but without breaking things. NOTE: In 1.64 (the next stable release) the warning will be changed back into an exception, because code with this problem can be subtly broken and cause unexpected errors elsewhere. So make sure to fix your code if you get this warning. - Closed bugs and merge requests: * GSettings crash fixes [Andy Holmes, !373] - Memory savings for Cairo objects [Philip Chimento, !374] - Fix for crash in debug functions [Philip Chimento, !374]