Using the AppImage version of IDE 2.3.2, when saving to a remote Samba share, the sketch folder is created but the .ino is not saved. The IDE displays this error:
ENOTSUP: operation not supported on socket, copyfile '/tmp/.arduinoIDE-unsaved2024328-2908000-197kpns.8dyp/LDU_Rotor_Temperature_Monitor_Arduino_Pro_Mini/LDU_Rotor_Temperature_Monitor_Arduino_Pro_Mini.ino' -> '/run/user/1000/gvfs/smb-share:server=joni-3.local,share=www/html/Toyota/RAV4/EV/Owners_Rigs/Al's_2014_blue/DU_Repair_202404/Rotor_Temperature_Monitor/LDU_Rotor_Temperature_Monitor_Arduino_Pro_Mini/LDU_Rotor_Temperature_Monitor_Arduino_Pro_Mini.ino'