[BUG] Copying/moving messages between IMAP accounts breaks them

Hello, I’m moving between hostings and was hoping I could copy all the messages through IMAP with eM Client, but this doesn’t work well.

Messages look like they copied alright from within eM Client, but any other IMAP client or webmail will show blank space where their contents should be

In eM Client it still looks okay

In Thunderbird it shows something, but not what you’d expect, the message source


If I copy messages with Thunderbird, everything works fine so bug must be in eM Client version 8.2.1237 (b402cf3)