I still use 188.8.131.52 and will continue using it until it no longer functions, after I found out /msnp24 fixes the issues with cloud chats I switched back to it as my main Linux client, I just don't like Skype for Web right now but I do use it on things like Chromebooks and do value their efforts and work.
Skype4Linux Alpha v 184.108.40.206 on Ubuntu 16.04 LTS opens as empty window, without any content... Menu is visible as well as some menu actions are enabled, however, no way to try to login/connect. To be exact, when starting, there is some "splash screen" or kind of progress-bar or wait icon for really short while visible...
I have installed on two different machines, both running Ubuntu Mate 16.10. In both cases, it opens a window that remains blank, white space, nada, useless. Frankly, I feel that Microsoft is quite happy to take open source server technology they can make a buck on, but things like this tell me you don't give a crap about the community. You need to make this product work on Linux, well, and quickly, to have a prayer of changing my mind. I work in software development and recommend MS solutions only as a last resort, for exactly this kind of reason. Please, change my mind by treating Linux like a first class citizen - after all, it's making you a fortune on Azure!