That's because they rewrote their native Cocoa application in Electron and threw away years of work that they had put into it making it decent along with it.
The new Skype is so bad, we joke that it must be malware. The design was bad already, but holy eyesore. At least the MacOS version works.
On android, when I log in as my account, the only contacts I have are those from my sisters account (???) and none of my subscriptions are there so I can't even make calls that require Skype credit even though my account has credit. I had to add my wife as a contact and none of my chat history with her showed up. As close to unusable as it comes...
I wonder what the engineering team is doing over at Skype HQ. I can't even see my message history with the latest overhaul/update. I would migrate to a new platform but most of my friends are already on Skype, thus migrating to another would be a hassle.
We found that Hangouts was the most resilient, followed by FB Messenger. All better than Skype. (Of course all 3 are terrible from a lot of aspects, mainly they come with having a Google or FB account.)
Slack is good for 1-1 calls though.
And of course there are possibly hundreds of free and open source alternatives, but I don't know of any that can be easily used from a browser.
What are some good alternatives that offer group calls and screen sharing?