The following key bindings need to be updated for MacOS:

TextField and TextArea:

Shift-Home, Cmd-Shift-Left: Extend selection to beginning of text
Shift-End, Cmd-Shift-Right: Extend selection to end of text
Cmd-Shift-Home: Select to beginning of text
Cmd-Shift-End: Select to end of text

TextArea:

Cmd-Home: Move cursor to beginning of text
Cmd-End: Move cursor to end of text
Cmd-Shift-Left: Extend selection to beginning of line
Cmd-Shift-Right: Extend selection to end of line
Cmd-Shift-Up: Extend selection to beginning of text
Cmd-Shift-Down: Extend selection to end of text
Alt-Up: Move up paragraph
Alt-Down: Move down paragraph
Alt-Shift-Up: Select up paragraph
Alt-Shift-Up: Select down paragraph