The bug
When upgrading from an older version to the newest snapshot, rain will go through blocks that were placed in the older version (tested from 1.8.8 to 19w05a).
Linked issues
is duplicated by 21
Attachments
Comments 30
Your issue is most likely MCPE-37557.
Upgrading from snapshots to other snapshots is not always supported. If you have this issue after upgrading a world that was last opened in a full release (such as 1.13.2 or 1.12.2), we will reopen this ticket.
I last opened my realm in 1.13.2 and when the realm got upgraded to 1.14 it started raining through the roof as stated above. I think this should be reopened.
There's a new ticket about this issue: MC-149791
A similar thing happened to me where the rain went under water.