Does the fabric on your panel glides keep slipping out?
Fix the problem by installing new end caps and the problem will be fixed.
End caps for battened panel glides to hold fabric in position and cover ends of decorative battens that are used to keep fabric straight and stop from cupping.
These end caps are to suit round battens, newer battens have a flat side
White only…superseded stock…new battens have a flat side.
Photos give more accurate measurements and details