Impacted versions: 13

Steps to reproduce:
create cronjob:

<record id="my id" model="ir.cron">
            <field name="name">lol</field>
            <field name="model_id" ref="my_app.model_my_model"/>
            <field name="active" eval="False"/>
            <field name="user_id" ref="base.user_root"/>
            <field name="interval_number">1</field>
            <field name="interval_type">days</field>
            <field name="numbercall">-1</field>
            <field name="state">code</field>
            <field name="code">model.cron_blabla()</field>
            <field name="nextcall">2010-01-01 02:00:00</field>
        </record>

and my_model.py has :

@api.model
    def cron_blabla(self):
        running_jobs = self.env['some.model'].sudo().search([])

Current behavior:
No error in the log, but it doesn't do anything. The debugger can't retrieve the self value thus i can't perform the typical self.env['my.model'] and if i let it run i get an eternal odoo loading screen.

"running_jobs = self.env['some.model'].sudo().search()" accessing self here, is for some reason a problem.

Expected behavior:
The function should run, self.env['xyz'] should work


Help is highly appreciated

Special Hint/Edit:
I found out that the method is crashing as soon as it enters the function. The content of the first line doesn't play a role on the outcome