Clarification on VL53L5CX Sensor: When to Use “With Liner” vs “Without Liner” Version

[R_T_N__]

Hi All,
I see two order codes for the VL53L5CX:

• VL53L5CXV0GC/1 (with liner)

• VL53L5CXV9GC/1 (without liner)

The datasheet says the liner must be removed before mounting the cover glass, but it’s not clear when the liner version is required.
Could anyone of you clarify the purpose of the liner and when to choose the with liner version instead of without liner for standard PCB assembly?

Thanks.