They probably had to many people accidentally copy-pasting strings with spaces into the form. Like the good old "double click to select a word" also picking up

They probably had to many people accidentally copy-pasting strings with spaces into the form. Like the good old "double click to select a word" also picking up the space after the word. The reason I can empathize with your complain is it being highly unlikely they are able to keep those restrictions consistent across all password forms & login methods.