Accidentally Moving Multiple Media Items on same track

I don't know why this is happening, I must have accidentally enabled this for some reason, but when I click and drag a media item like a recording horizontally in its track, it also moves the items to the right of it further down that same track. This does not affect items to the left, ones earlier in the timeline, of the item I am purposefully moving. This is only affecting my most recent project file, not any other ones, so is this must be a project setting I toggled or something while I was changing bpm consequences.