Changes on Edit > Preferences > Transpot > Preroll seems to have no effect.
Using Ardour 9.2 official build.
PS: the ctrl-shift-space, ctrl-shitf-< or ctrl-shift-> should have different behaviors? Because all of them works exactly the same way here.
I made some tests. Ziped the .config/ardour9/ folder to reset the configs and now it works.
And the “ctrl-shift-space, ctrl-shitf-< or ctrl-shift->” shortcuts works as intended.
But, when I open a session that was edited last time with Ardour 8.12, the 9.2 versions behaves strange, just like the video.