Reply To: Alt + lmb not working for edge loops: double click does

That’s probably to do with your settings rather than a different version of Blender.
Or it could be because of a tool selection mode or even an add-on changing default behaviour.

It’s hard to say exactly why without seeing it in Blender.

If you still have this issue, could you record a video, or add some images, of your Blender, showing the toolbar, the Keymap preferences and any add-ons you have enabled, and the action itself.

Video can be uploaded to google drive, dropbox or similar and share the link here
Images can be added via the image icon on the content toolbar.