Bug: PlotJuggler becomes non-responding after pressing "Undo" #1055
Description
I found a bug that is reproducible:
In a plot, right click and then press ctrl+z to undo any last change. The undo does not happen and PlotJuggler freezes. In the terminal, we see this error: "double free or corruption (out)"
It can only be restarted after killing it on the terminal.
Observed on PlotJuggler-3 3.9.1
