User A sends a E2E encryption photo to user B and the photo display normally until user b read the message Now the read receipts works and the E2E encryption photo becomes "whitelabel" on both user's screen (iOS APP)
see the photo below

As long as read receipts work and photos in end-to-end encryption become ‘whitelabeled’.

This issue exists since the E2E encryption of files became available

Expected behavior:
E2E encryption Photos can display normally with read receipts enabled

Actual behavior:
Whitelabeled

One more bug on iOS app.
E2E encryption photos can be saved and E2E encryption videos can't be saved
RC server: 6.13.0
iOS app: 4.54.1.68652 (the latest)