Tvheadend

I have set the picon path in General > Base as follows:

In General > Image Cache > Hit, "Clean image cache" and "Re-fetch images" and in the Channel view, the User icon field remains empty:

However, if I set the Channel Icon path afterwards:

I now have the User icon field automatically calculated:

I'm failing to understand what am I doing wrong for the picon paths not to be calculated automatically.

Can you confirm if there may be an issue with picon paths build in this version?

Thanks, Pedro