Perhaps my question is related to this one.
I use to use the English US International Keyboard with Alt-Gr Dead Keys (as far as I remember. This layout allowed me to write é by pressing R-Alt+' and then e.
I migrated to EOS Luna and now, no matter what English US International keyboard I may use, R-Alt+' prints ' and to get é I need to press R-Alt+e.
Has the layout changed? Is it a bug in EOS? Or do I need another layout?
Here below are the various layouts under English US available on eOS:

xev, on pressing AltGr+ ' returns:
KeyPress event, serial 29, synthetic NO, window 0x3600001,
root 0xac, subw 0x0, time 22275171, (752,335), root:(753,407),
state 0x0, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), same_screen YES,
XKeysymToKeycode returns keycode: 92
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 32, synthetic NO, window 0x3600001,
root 0xac, subw 0x0, time 22275456, (752,335), root:(753,407),
state 0x80, keycode 48 (keysym 0x27, apostrophe), same_screen YES,
XLookupString gives 1 bytes: (27) "'"
XmbLookupString gives 1 bytes: (27) "'"
XFilterEvent returns: False
KeyRelease event, serial 32, synthetic NO, window 0x3600001,
root 0xac, subw 0x0, time 22275527, (752,335), root:(753,407),
state 0x80, keycode 48 (keysym 0x27, apostrophe), same_screen YES,
XLookupString gives 1 bytes: (27) "'"
XFilterEvent returns: False
KeyRelease event, serial 32, synthetic NO, window 0x3600001,
root 0xac, subw 0x0, time 22275566, (752,335), root:(753,407),
state 0x80, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), same_screen YES,
XKeysymToKeycode returns keycode: 92
XLookupString gives 0 bytes:
XFilterEvent returns: False
