Shortcut for shifting input languages is often not working.
Hello,
Since I am using 6 keyboard input languages on my MacBook (Catalina 10.15.2), I use shortcut (command+space, customised) to change them. But after I have upgraded the macOS to Catalina, this shortcut works as usual when I try to shift to the most recent input language that I used, but when I holding space bar to select other languages, the languages window does not pop up.
Also, the first syllable of Korean 2-set method (or maybe all Korean input methods) is not assembled. This is very irritating when I try to focus on writing, as this error occurs very very frequently.
MacBook Pro 13", macOS 10.15