As we said offline, this is not a symbolisation issue.
The trace was symbolize without the flag to avoid symbolisation of system librairies, but it was symbolized on the wrong computer.

In fact, the symbolisation should be more robust and detect it's not using the right source. This is easy on windows as we are getting the unique PE identifier for every loaded DLLs. It's a little more complicated on other architecture.

We could also turn off symbolisation of librairies by default. And turn it on when the flag is specified. Which means the user is able to take the risk of using the wrong system librairies symbols. In fact, he is confirming he knows what he is doing.