ORAM: gig files are silent

ciao a tutti

before opening a ticket I would like to verify if it happens only to me
1-I open Linuxsample,
2-I load a gig soundfont
3-When I play, chain is silent but the mixer channel of Linuxsampler chain shows activity

zyncoder: [oram (c575089)]
zynthian-ui: [oram (946875d)]
zynthian-sys: [oram (c016b36)]
zynthian-data: [oram (97355e2)]
zynthian-webconf: [oram (4c5d7a5)]