The latest "This Week in Plasma" update from KDE focuses less on new features and more on fixes, performance tweaks, and the removal of colorful third-party app icons from Breeze.
Removing of all colorful third-party app icons from the Breeze icon theme. This was done for not wanting to override the branding of third-party apps as well as lacking the resources to maintain all of these third-party icons where their branding may change over time. This affects many apps such as for LibreOffice, AnyDesk, Audacity, Atom, GIMP, FileZIlla, Emacs, Keepass, MATLAB, Mixxx, Scribus, Sublime, Diaspora, and many others