Two observations: 1. Spacer tool: If Timeline -> Guides -> Guides locked is ticked, they do not move around while using the spacer tool. If Timeline -> Guides -> Guides locked is NOT ticked, they do move around while using the spacer tool. I would it expected just the other way. The same is true when using right click on timeline -> Remove space in all tracks. 2. When inserting space, guides lock doesn't work at all. If I add space using right click on timeline -> Insert space, then I select "Insert space in all tracks", then guides are not moved correspondingly, and if Timeline -> Guides -> Guides locked is ticked or not doesn't change the behaviour at all. I would it expect just as with removing space.