In the subscreen editor, changing the alignment of any text to left-aligned will result in the text appearing right-aligned (in the editor and in the game), and vice-versa.
Subscreen editor text alignment bug (226 win)
I'm not seeing this bug at all: I made a new Text Box, put in some sample text ("test test"😉, set the alignment to Right, and everything worked fine. Same with Left and Center.