First identify what fix panels means in your case: a panel may refuse to snap, move after placement, sit at the wrong rotation, leak products, or fail because of a version-specific bug. For attachment, target a solid surface and look for valid placement feedback; if snapping blocks the placement, test with Snap disabled. Use Sticky Tools for fixed structures, and on Update 1.0.5 or later use the documented double-click rotation reset and current Panel Rack behavior.
If the panel will not attach
Aim at a solid target and confirm the game's valid placement highlight appears before releasing the panel. Community evidence reports that Snap can sometimes prevent a desired lock, so test the same position with Snap turned off rather than leaving a hidden gap. If the target is another loose object, stabilize that base first so the new panel is not being attached to a moving surface.
If the panel attaches but will not stay
Confirm that Sticky Tools has been unlocked and that the panel touches the ground or an object that is already fixed. Grid alignment alone does not guarantee that a physics object will remain in place. Build from a stable contact and verify each panel before allowing fans or products to strike the structure.
If the rotation is wrong
Update 1.0.5 documents a double-click reset rotation action that can return an object to a flat orientation. Verify that the game is at least that version before assuming the input exists in an older build. After resetting, place the panel again and confirm the contact and Snap state rather than treating the visual rotation fix as permanent attachment.
If products leak or flow backward
Use panels as a contained tunnel with side walls high enough for the fan strength and product collision pattern. Adjust one angle at a time, watch several products, and add airflow only after the physical route is stable. This is a layout problem rather than a software bug when the panels behave correctly but the products escape through an open edge.
If it looks like a current bug
Record the platform, version, whether the issue involves placement, rotation, Sticky Tools, or the Panel Rack, and the exact steps that reproduce it. The 1.0.5 update added Panel Rack behavior and related fixes, so older reports may no longer apply. Without a reproducible current symptom, the cause and fix remain 待确认 rather than being assigned to one universal panel bug.
Sources used for this answer
These links are the accepted evidence set for this page. Player methods are kept separate from official or developer statements, and unsupported details stay marked 待确认.