Unlink session start/end markers?

Just installed Ardour on my new laptop and facing this issue: the start/end markers are always moving together as pair, I can’t move them separately?

I can technically use ‘Set Session Start/End from Selection’ but it’s still annoying to be unable to adjust start/end without affecting the other. And I can’t find any option in preferences to adjust this…

That is odd. Only explanation would be that both markers are selected…

Which version of Ardour is that (Menu > Help > About)?

Can you try if you can manually set them Ardour Menu > Window > Locations:

image

Either enter value, or “Use PH” (playhead) to move the marker to the current position…
Does that set them separately?