Fix double free problem when working with interactive belief explorer #466

Job	Run time
Test and Deploy on latest (Debug)	21m 46s
Test on stable (Debug)	8m 8s
Indepth Tests (Debug, all libraries)	26m 16s
Test and Deploy on latest (Release)	27m 43s
Test on stable (Release)	8m 23s
Indepth Tests (Debug, no libraries)	19m 15s
Indepth Tests (Release, all libraries)	27m 3s
Indepth Tests (Release, no libraries)	20m 52s
Email notification	3s
	2h 39m 29s

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