The problems were due to third party libraries in Ubuntu, not Spotify's code. It takes time for updated libraries to make it into Linux distributions.
It's not helpful to have a pop at Spotify for this. The app was seg faulting on a given linux distribution for bugs which were not in their code. This is a project that appears to be done mainly from the good will of staff interested in making a Linux offering as opposed to leaving us completely in the cold, like most commercial organisations.
I don't know why but I get this error : [1123/164403.997336:ERROR:buffer_manager.cc(488)] [.DisplayCompositor]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command I am running on Kubuntu 19.10 and I have the latest libcurl3-gnutls (7.65.3-1ubuntu3) and libgnutls30 (3.6.9-5ubuntu1). So I just get the grey background of spotify and nothing loads.
I'm not sure if the error message posted above is related to your problems. Many people get that error message and their Spotify is working fine. However you can get rid of the message, by telling the client to not use accelerated graphics features.