Also facing this VERY annoying bug.
Only tips I found is to go into the build log screen to find the actual error.
On the left panel, select icon "Show Panel Panel Navigator" which is the right most icon. Then select the build which failed. That opens the build logs where the compiling errors are listed. A click on each error redirects to the culprit snippet. That's a tip, but very unhandy and would be glad to have a proper fix!
Topic:
Developer Tools & Services
SubTopic:
Xcode
Tags: