I updated my program version to 17.5.2303, and upon the first reboot, the behavior shield turned itself off. I had to manually turn it back on. After each subsequent reboot, it stays on. Just thought I would pass this along to others, as reassurance if anybody else has experienced this bug. I’m assuming it’ll be fixed in the next update.
Known bug scheduled to be fixed in version 17.6 according to Avast.
Mine also does the same thing upon startup. I( just enable it again figuring it’s a bug to be worked out.