New "prefer tabs" feature wrongly forces tabs to open on dualhead system with one fullscreen window

Originator:crazor
Number:rdar://29769972 Date Originated:21-Dec-2016 01:03 PM
Status:Closed Resolved:October 7 2017, 10:37 AM
Product:macOS + SDK Product Version:macOS 10.12.2 (16C67), Safari 10.0.2 (12602.3.12.0.1)
Classification: Reproducible:always
 
Area:
Safari

Summary:
When setting the new "Prefer tabs when opening documents" setting to "In Full Screen only", the behaviour is unexpected on a dualhead system. While running Safari fullscreen on one screen (e.g. playing a YouTube video), Safari opens tabs on the other screen even when choosing new window.

Steps to Reproduce:
On a dualhead system:
1. Set "System Prefrences => Dock => Prefer tabs when opening documents" to "In Full Screen only"
2. Open a Safari window on each screen
3. Switch one of the Safari windows to fullscreen (e.g. play a YouTube window fullscreen)
4. Select the other Safari *window* on the other screen
5. Open a new Safari window (CMD+N, via the Menu Bar, etc)

Expected Results:
Since I ordered to open a new window from a non-fullscreen Safari window, I expect a new window to open on the current screen

Actual Results:
I get a new tab in the non-fullscreened window instead.

Version:
macOS 10.12.2 (16C67), Safari 10.0.2 (12602.3.12.0.1)

Notes:


Configuration:
Dualscreen system running current software

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!