Villagers will never run or panic when near zombie villagers. This bug is actually no big deal since villagers will die whether they "try" to run away or not due to their suicidal behavior in MC-147851.
MC-151771
Villagers don't try to run away from zombie villagers
Resolved
Fixed
6
migrated
Confirmed
Mob behaviour
Minecraft 1.14.1, Minecraft 1.14.2 Pre-Release 1, Minecraft 1.14.2 Pre-Release 2, Minecraft 1.14.2 Pre-Release 3
Minecraft 1.14.3 Pre-Release 1
Retrieved
Relates to MC-147268 and MC-147851