Thanks all of you for your valuable answers!!
I've just took hours (hours!) backing up my sh*t and making a great reset (Schwab style) to my computer, and installed Ubuntu 25.01.
After those hours, downloaded and installed sh3d 7-5 and....
It looks the same!!!
And the dialog open/save still looks when computers had green screens and pointers didn't exist. LOL.
Thanks sjb007 for your info.
Nothing else to do, just use sh3d with this ugly appearance and uncomfortable dialog.
Money talks.
