The wiki says:

• Zombies target villagers within a 35– to 52.5–block radius (depending on regional difficulty)‌[Java Edition only] or a 16-block radius‌[Bedrock Edition only] and they can always see villagers through walls. If a zombie is attacking a villager and sees the player, it interrupts its attack on the villager to attack the player instead, even if the player has not attacked it‌[JE only]. Once a zombie has targeted a villager, the zombie ignores any other villagers and the player, until its target is dead or the zombie is attacked‌[JE only].

Before the 1.14 update, if the zombies near the house with villagers inside, the zombies can always aggressive towards villagers no matter which the villagers are in inside or outside, instead of only aggressive towards villagers when find them by chance. However this feature has been removed from 1.14.

I looked the wiki again, I didn't see anything about the zombie's behaviour was being removed from the wiki.

The feature is still in latest Bedrock Edition.

Relates to MC-148379.