reliable segfault when opening the same .vcd file in two simultaneous tabs

[aelmahmoudy]

with some views containing well over 800 signals it becomes impossible
to usefully put all of them into a single tab.

one sensible option therefore is to place subsets of relevant (related)
signals into one tab, and to open a second tab - refreshing both
when the simulation is updated - containing other relevant (related)
signals.

unfortunately when doing this, there is a 100% reproducible occurrence
of gtkwave segfaulting after transitioning twice between such tabs.

[aelmahmoudy]

Reply from @gtkwave on email:
I don't see your crash when I try doing what you said. I need to see
your set of waves with explicit directions and/or you need to run and
point to what is segfaulting.