In Element (on desktop at least) spaces act like tabs to order the massive vertical list of chats. On mobile these spaces are hidden in the slide-in menu.
You still need to go through the whole process of creating a Space even if it's just some place in a chat that you want open while you're having a conversation in another chat.
You still have to use the same window to switch between them.
These are not tabs.
If i read things properly, the spaces concept is not specific to the Element client (available per the underlying matrix protocol)...so technically, any other client could in fact apply a different UI/UX approach to displaying the spaces, such as tabs...again, if i'm understanding things accurately. So, maybe other clients could implement something more to your liking (such as tabs)??
This will still create a separate space that will appear in our clients, that needs the privacy settings etc.
By "tabs", the person to which you replied meant the ability to view multiple chats at the same time, I think.
So sort of a user interface like TweetDeck where you can horizontally scroll between multiple feeds?