Imported audio tracks from Studio One Pro 7 do not show the L for looping

[ToonArmy]

...and I cannot turn the L on.

What are my options here? Do I need to activate something in Studio One?

All files are .wav 48khz at 24 bit. No files are write protected.

The L is missing completely

NO L.png

And there is no option to turn it on

No option.png

[skipscada]

If you upload one of your files somewhere I can download it and see if I get the same behaviour.