John .... You could try left click-dragging those gray dots. Drag them to the right while holding down your mouse button - see if that works ....
Hopefully that will restore your missing project structure ...
Also, if you want your layout restored (that is "docked") back to the 'default' position, you can either:
● Double left click on the timeline's green bar, or,
● press CTRL+ 3 together .....
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Please be patient with me ..... I don't always 'get it' the first time 'round - not even the 2nd time! :( - yikes! ...
● MSI GT72VR Laptop, i7 7700HQ 4-Core 3.8 GHz 16GB RAM; Nvidia 1070, 8GB Vram ● iClone-7.93 ● 3DXChange Pipeline 7.81 ● CC-3 Pipeline 3.44 ● Live Face ● HeadShot ● Brekel Pro-Body ● Popcorn FX ● iRAY ● Kinect V2 ● DaVinci Resolve17 ● Mixcraft 8.1