I also mentioned this to support, it would be a really great feature for Salesforce development if errors returned by Salesforce while trying to sync would be listed (with line numbers) on a separate tab at the bottom of the GUI. This would be next to the Immediate execute tabs. At the moment it’s a bit too cumbersome to click on the red sync button and then the error to actually get at the message. Then I have to click again and look for the cursor to find out the line number.
IMO this is a pretty basic IDE feature for any kind of development, even the SF dev console has it