On Sep 22, 2017, at 11:19 AM, Dan Wilcox <danomatika@gmail.com> wrote:

Note: IOhannes has an updated PR: https://github.com/pure-data/pure-data/pull/225

The previous build should work them same.

On Sep 21, 2017, at 1:35 PM, Dan Wilcox <danomatika@gmail.com> wrote:

Ok, I believe I have a fix: https://github.com/pure-data/pure-data/pull/224

You can download and try a test build for newer Macs (10.9+): Pd-0.48-1-multimonitor.app.zip

From doing some research, it seems support for negative positions was added to Tk a while ago and it seems to be working fine. I basically just removed the hard clipping to 0 and only try to do the manual placement if Tk is 8.4.