No Custom tones under contacts?

[vinxcz]

My lumia is on build 10.0.14915.1000. I have copied custom tones to ringtones folder and I can see it when I go to Settings>Personalisation>Sounds. But when I go to a single contact and +Add Ringtone, I am not able to see the custom tones. Has anyone tried this or know how to set this?

 

[Chintan Gohel]

It looks like an issue with this build, another user also reported the same