Door Open when Close another Door
When you open/close a door, does the other side move up/down?
This may occur due to the air pressure (the cold air circulation) inside the refrigerator. This is normal.
A refrigerator is designed to have the air passage to allow air to circulate between the freezer and refrigerator compartments.
When the fridge door is opened and closed, internal air is compressed and pushed to the opposite side, causing a refrigerator door to wobble temporarily.
How to fix
If it is due to air circulation, this is not a sign of defect and it is safe to use.
Check the gasket as this can occur when it weakens. Wipe it with a cloth before use.