I receive this error when trying to archive messages: "Error message: Syncback Task Failed: All messages in a thread require an IMAP uid to perform an action"
Are there any related issues?
Seemingly, no.
What operating system are you using?
Elementary OS Loki (Ubuntu 16.04)
What version of Nylas Mail are you using?
1.0.28
Bug?
Do you have any third-party plugins installed? If so, which ones?
Activity List, Emoji Picker, Quick Replies, Translation, Link Tracking, Open Tracking
Is the issue related to a specific email provider (Gmail, Exchange, etc.)?
Using Fastmail, not sure if it is specific to Fastmail.
Is the issue reproducible with a particular attachment, message, signature, etc?
No.