It seems that with v19.4, the custom shortcut keys (e.g. "select to matching brace") are not usable anymore in the "SQL" tab of a view.
This was still working in 17.4 (my daily driver) and probably 19.3 which i only used briefly.
I find this very handy when viewing a complicated view and capturing bits of it.
Pet peeve of mine: these little gratuitous changes (and sometimes regressions as with the excel date export issue)
make what should be a no-brainer (let's adopt the latest quarterly edition) a somewhat risky proposition.