Pomello MySql not mapping Bools correctly?

The screenshor shows a small snippet where i get a db entry, and set the bool property from false to true. then i save the change. i get a propper log in the console that the query gets executed, but no changes in the database occur. The project itself all works as expected until now that i add a boolean column. Any ideas why this could happen? (reading values from the database works as expected)