Are you using Kubuntu 25.04 Plucky Puffin, our current stable release? Or are you already running our development builds of the upcoming 25.10 (Questing Quokka)? We currently have Plasma 6.3.90 (Plasma 6.4 Beta1) available in our Beta PPA for Kubuntu 25.04 and for the 25.10 development...
