Sample project loses subscriptions after PLCnext Engineer "Download Changes" event

[martinboers]

Sample project loses subscriptions after PLCnext Engineer "Download Changes" event.
Subscriptions can ony be restored by re-starting the PLCnext Runtime.
Reported here:
https://www.plcnext-community.net/en/discussions-2-offcanvas/isubscriptionservice-error-in-sampleruntime.html