I tried that but didn't help. Just for testing purpose, I set another application as default for XML. And it works fine with that application, all files opens in the same instance. Changing back to Geany, and the problem is there again.
As you say, should be the Mac OS, but still I'm surprised this happens only with Geany -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/geany/geany/issues/1619#issuecomment-333334689
