I think this is the chair I have, but I can't find the black plastic seat rail guides (back) that the seat glides on when opening and closing the chair.

Cars and Trucks category is probably not the best choice category

No one has documented it, but there are some guesses. Look for some type of clip that is stopping it. They have something to stop the chair seat and stem separating when you lift the seat to move it.

https://www.google.com/search?q=reassembly+of+Black+Lucite+Eros+chair

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get strong help

At the back of your drawer, there should be 2 guide or glides. These glides have a slit in them.... Now pull out your drawer and look inside the frame of the range where the drawer goes. You will see a horizontal bar or or rail that goes from the front of the drawer area to the back, on both sides of the range. Those glides on the back of your drawer are supposed to "hug" that rail. Or to put it another way, that rail must go in the slot of the glides. Of course, if you are missing 1 or both of the glides, or if they are broken, then that is why the drawer falls to the floor when you open it.

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Bolts commonly loosen up on these. You may be able to tighten them. I had to turn the chair over, pull out some of the staples that hold the material on and find the nut that went on the inside, then I was able to tighten the bolt again and staple the material back in place. I also had to make a new plastic cross bar for the scissor assembly by using a half inch PVC pipe and two flat plugs and two couplings, I then drilled a hole in the center for the screws to go in. Painted the newly made one with black plastic paint from Lowes and it's stronger now then before. If you want parts here is Home Meridian's contact..........

common problem. you just have to guide them into place with your hand everytime you unfold the chair.

You need to take out the tube to see the 2 latches at the end of the 2 rails still has spring attached. The 2 latches keep the tunb in the place when it closed. They are replaceable
The white plastic guide is broken because of the the brittle plastic and it is OK.

For front seats. push them all the way to the front then got to the back and pop out the plastic covers on both sides of the tracks.
Then push the chair back and unscrew the nut under the seat in the middle on the end of the positioning guide you got to use an allen key. then you slide the chair all the way back and it will come out.

For the back seat use the same allen key and unscrew the 2 screws just below the front of the seats then lift the seat out. for the upper part just pull the two release knobs on each corner to drop it down. Then take a flat head screwdriver and push back the latch in the hinge of the seat at the side then it should pop out.

Well, I would say the seat might not glide easily back and forth. But, it may still work. I guess worst case is the seat motor could overheat and maybe "fry?".

I would take it out and see how the seat moves back and forth. If there's noticeable difference, I would pursue trying to get this part back in place.

Okay, I fixed it for now. The design for this bottom freezer drawer is not good. What happened was most likely that my son slammed the door, and it bounced and was slightly open. Overnight, ice started to form all over the compartment, including inside the drawer guides. Some ice was probably obstructing the drawer glide from sliding shut.

What I did, not thinking this was the solution, was to prop chairs against the drawer to close it while I searched for answers on the Internet. In the meantime, some of this ice must have refrozen in the closed position (due to the weight of the chairs). When I went to check it later, I had a little trouble opening the drawer. I gave it a hard yank and some small frost flew off, as I opened the drawer.

It was not easy sliding it due to the frost. I then moved it out and in until it felt smooth, and finally closed the drawer and it stayed in the shut position.

Kids are instructed to close the drawer gently and visually check that it is sealed. There is also an air passage between the refrigerator unit and the freezer so that when you close the double french doors, some air pushed to the freezer section and momentarily pops the drawer open. You should make sure that the drawer closes before leaving the kitchen. If you are on vacation, prop chairs to make sure both the freezer drawer and the french doors stay closed. This is important if you're in an earthquake area as a small tremor could open the doors and you'll get a fire when the lights stay on and burn through the wiring (as others have noted).