Replies to deleted messages have the contents of the deleted message visible

[WGH-]

Describe the bug
When you reply to a deleted message, the "In reply to" box will show the contents of the deleted message.

To Reproduce
Steps to reproduce the behavior:

1. Post message 1
2. Reply to message 1
3. Delete message 1

Expected behavior
"In reply to" box of the reply would have "Message deleted" as well.

Screenshots
This is how it looks in Element web (expected behaviour):

And this is how it looks in Element Android:

Smartphone:

• Device: Xiaomi Redmi Note 4
• OS: Android 7.1.2

Additional context

• Element 1.0.8 (F-Droid)
• Homeserver: torlan.ru

[lub]

This is probably the result of matrix-org/matrix-spec-proposals#174, because element-android only shows the fallback included in the reply (you can't redact the fallback without redacting the whole reply) instead of properly fetching the event that is replied to.

[auscompgeek]

See also matrix-org/matrix-doc#1654