MC: Re-rendering the input net after closing the right panel

[mgieseking]

When closing the right panel, the Petri net with transits in the left one is still covered. Maybe we only have trigger the re-rendering process.

[annyanich]

Unfortunately I have not been able to reproduce this one yet. I will see if I can find some more time to look at it the coming days. If not, I guess that's just the way it is 🤷‍♀️