`V2D_VIEWSYNC_AREA_VERTICAL` flag was mistakenly set to the sequencer toolbar region instead of the channels region. Reviewed By: ISS Differential Revision: https://developer.blender.org/D16155
`V2D_VIEWSYNC_AREA_VERTICAL` flag was mistakenly set to the sequencer toolbar region instead of the channels region. Reviewed By: ISS Differential Revision: https://developer.blender.org/D16155