Even though 20w22a changelog says it has been fixed, players can still use zombies to remove raid's panic on villagers, and then villagers can claim workstations during raids.

That bug makes this kind of farms https://youtu.be/UJ5aTSB_Nk4?t=33 can work in version 20w28a.

world : http://www.mediafire.com/file/sf12lb4kcbhg5ao/Stacking_Raid_Farm_V3.1.zip/file