Updating worlds from 20w16a Creates chunk glitches

After updating a server to 20w17a from version 20w16a there are chunk glitches that you can see on maps. These chunk glitches seem to cause rain to be blocked. Or rain to go through blocks underground.

This only occurs when updating worlds from 20w16a to 20w17a and can be replicated in singleplayer and multiplayer servers