On the previous version of Aida64 the GUI/UI would close out while the benchmark module continued to run. The headers would automatically become highlighted before the GUI would close (as can be seen in the pic from the OP). When relaunching Aida64 it would provide a message that the test ended unexpectedly.
With the newest version of Aida64 it has changed somewhat. The header becomes highlighted like before, but instead of the GUI closing the GUI freezes up, the numbers stop updating, and the elapsed time window goes blank, while it continues to run. There is also no longer a message about the test ending unexpectedly.
I've experienced this every time I run a test on Aida64. Usually between 1 hour and 35 minutes to 1 hour and 50 minutes.