Properties not getting processed in snapshot comparison occasionally

[alperenkose]

Describe the bug

Snapshot comparison reports differences for excluded attributes with the properties keyword which happens randomly.

Current behavior

For the following sample snapshot reports comparison request, it is expected that differences in flags element at the lowest level should be ignored and the other fields should be compared. However, snapshot comparison randomly ignores this setting and compares all the fields.

{"routes": {"properties": ["!flags"]}}

Steps to reproduce

Run snapshot comparison reports with properties until the issue is seen.