Some of the standard Mac text editing shortcuts do not work inside of text frames on Affinity Publisher for Mac beta. For instance:
Command + Left Arrow and Command + Right Arrow move the cursor one word to the left or right rather than moving the cursor to the beginning or end of the line.
Command + Shift + Left Arrow and Command + Shift + Right Arrow behave similarly, selecting one word to the left or right rather than selecting everything to the beginning or end of the line.
Option + Left Arrow and Option + Right Arrow tighten or loosen the kerning rather than moving the cursor one word to the left or right.
Option + Shift + Left Arrow and Option + Shift + Right Arrow select one letter to the left or right, rather than selecting one word to the left or right.
Command + Delete does not appear to do anything rather than deleting everything to the beginning of the line.