Can't input some accented characters in Vietnamese
I am using Gnome Shell 3.36-9, xwayland 2:1.20.13, Lubuntu 20.04. I add Vietnamese keyboard layout with deadkey, which is working well with all applications on LxQt, and I can't input five accented ư characters and five accented ơ characters in Nautilus 3.36.3, Gnome Terminal 3.36.2, GnuCash 1:3.8b, LibreOffice 1:6.4.7. Whenever I try to input those accented characters, the computer beeps, and no character appears. There is no problem with ư and ơ themselves. All accented characters can be input to Firefox. The Vietnamese keyboard layout with deadkey is attached below.vn