Why does pressing Ctrl + Q (align left in Spanish) on a paragraph that is already left aligned justify it?

Thanks Stephan, but the command is correctly assigned and works perfectly except when the initial alignment is left.

In the screenshots you can see the initial situation of four paragraphs, one with each of the horizontal alignments, before applying the command and the final situation after applying it. As can be seen in all cases it is aligned to the left, except in the fourth paragraph, which was initially aligned to the left, which justifies it.

The result is the same whether I apply the command button or the keyboard shortcut.

WordExperto.

It will also justify the paragraph if that's what the style calls for.

Maybe Microsoft has changed the shortcut. You can change it back in the Customize Keyboard dialog box. (Sorry, I don't have a Spanish language version myself.)

In several other language versions of Word for Windows, Ctrl+Q is associated with the ResetPara command, which reverts to the paragraph settings of the underlying paragraph style. This will result in left alignment, if the style is using left alignment.

No, as I mentioned, I use the Normal style and its alignment is left.

It will also justify the paragraph if that's what the style calls for.

Indeed.