Created attachment 417674 [details] test case AX: increment/decrement is synthesizing the wrong arrow keys for horizontal sliders Test case attached... If you use the Mac interact with the slider (VO+Shift+Down; then head "in slider") and then increment with the keyboard (VO+Shift+Right), it will send the Left arrow key (expected Right for increment since default orientation is horizontal as default dir is ltr) This test case is a modification of the existing keyevents-posted-for-increment-actions.html LayoutTest
<rdar://problem/73227330>
Not limited to horizontal sliders. Decrement is sending Up arrow in the vertical orientation, too.
I am no longer able to reproduce this one after a restart... I'm thinking I have a cache problem with the local file... Anyway, I no longer see the problem, and Chris was unable to repro, too. Closing.