Old Gravatar pictures not updating when user uploads new avatar.

[brockwhittaker]

When a user sets their avatar, any old messages before the update still retain their old gravatar. Screenshot

All messages should probably just have the latest/most updated version of their profile picture all the way back. This issue doesn't exist when switching between avatars however -- only when switching from Gravatar to avatar.

[UTpH]

Hi! I'd like to try to solve this issue. Could you point out where I can start?

[timabbott]

This is now fixed. Thanks @showell!!