Description :
It appears that sometimes, when a connexion is destroyed, the label may be re-used.
Minimum required :
2 places (p0 and p1) and 1 transition (t2).
> Step 1 :
Double connect p0 with t2 and p1 with t2.
> Step 2 :
Destroy the two connexions (p0 then p1).
> Step 3 :
Connect t2 with p0.
Result expected :
A simple connexion between t2 and p0.
Result obtained :
A single connexion between t2 and p0, but the label is incorrect.


Exemple (mix of 8|8 and 1|1) :
