Do you have the same issue with other Modeler?
Please contact Support, as this is a support question
Reported the same issue with modeler 6.8.1 yesterday. Response from Mendix support:
This issue is known to us and we are working on a fix for this.
I'll keep you posted regarding the updates. We do not have any workaround as of now but we are working on it.
Let me know if you have any further doubts/issues.
Cheers,
Mendix Support