Qt 5.7+ and Command+Shift shortcuts on Mac

[René J . V . Bertin]

Hi,

I'm noticing a different in the handling of Command+Shift shortcuts on Mac, 
after upgrading to Qt 5.7.1 

Pre-existing shortcuts like Command+Shift+, for Command-< continue to show up 
as Command-< (<) but they no longer function. When I try to re-record them, 
the Shift modifier is dropped and I see Command-, instead. Though the Shift 
modifier is apparently taken into account at some level the shortcut still 
doesn't work. 

Is this purely a change in Qt5, or should I be looking at a change somewhere in 
a KF5 framework (I upgraded to 5.29.0 not long before upgrading Qt).

I'm not noticing any differences under X11, btw., using almost identical builds.

R.