Null Resource use in RouteGraphUtils.readConnectionStyle
If a diagram connection does not have any connection type at all, readConnectionStyle will try to read DIA.HasConnectionStyle
from a null
connectionType
.
The ensuing error will will prevent the connection from getting loaded at all and being visible to the user, but leaves the related terminals non-functional due to the existing connection. It would be better that the connection can be seen and deleted if necessary.