first launch after installing plank and deleting ~/.config/plank I have the following dockitems: gedit, google chrome, plank, vlc. They all have normal sort values below 1000 and plank behaves normally. I can replicated it by simply pinning any item. Here's a video showing replication of the bug. I pin nemo, move it to where I want. Then you can see apps are opening in the middle of my dock.
first launch after installing plank and deleting ~/.config/plank I have the following dockitems: gedit, google chrome, plank, vlc. They all have normal sort values below 1000 and plank behaves normally. I can replicated it by simply pinning any item. Here's a video showing replication of the bug. I pin nemo, move it to where I want. Then you can see apps are opening in the middle of my dock.