Thx @Pawanupadhyay10. I can confirm that this fixes the bug in Firefox. It is still rendered wrongly while moving an operator, but this is ok.

hi@vogti, thanks for your feedback, it fixes the bug on firefox but on moving an operator it is rendering .Can I take another issue as well?

Thank you for your contribution to Polypheny! Of course you can take care of another issue if you like :)

hi @vogti ,as it get merged ,so definitely I need to start with a new issue ,but i found that issues related to polypheny-UI are already taken .

There are two open issues related to the UI and not yet assigned to someone. Furthermore, there are some issues without any activity (e.g., 281, 254, 184). You can ask in one of these issues if the assigned person is still working on the issue and if not, I will assign the issue to you.