Is Tab Element still availble in this current version of Bubble? If it’s not, what the resource to build diferent tabs on a page?
I didn’t see a tab element in bubble. If it was there, probably removed. But creating a tabbed system is not hard. Just a bunch of groups on top of eachother that you hide and show. See the demo below:
Of course, you can make it look better 
And here is the editor if you want to check the details:
Thank you my forum friend! It helped me a lot!